From No-Kill to No-Birth: Emma Clifford’s M.A.S.H. Roadmap for U.S. Cities
How Animal Balance’s Mobile Animal Sterilization Hospitals, proven in the Galápagos and beyond, could give American cities a practical roadmap to end pet overpopulation humanely.
Introduction
In early December, Animal Politics published “The Island That Ended Pet Overpopulation,” a deep dive into how the Galápagos Islands adopted a prevention‑first model that makes the traditional animal shelter unnecessary. The story traced two decades of veterinary work, legal reform, and community education that turned lethal control into high‑volume sterilization, microchipping, and shared governance between local municipalities, the Galápagos Biosecurity Agency, and Animal Balance.
Reader response was immediate and intense. Shelter directors, veterinarians, rescuers, and policymakers wrote in with variations of the same question: if a fragile archipelago can build a humane, prevention‑based system around sterilization, registration, and enforcement, could any of this work in a typical U.S. city or county?
Emma Clifford is the founder and director of Animal Balance, a nonprofit she created in 2004 after discovering that cats and dogs on the Galápagos Islands were being poisoned with compound 1080 as population control. She has since worked with local governments and veterinarians on islands and in countries around the world to build humane, prevention‑first animal management programs, and she now advises the Galápagos biosecurity agency and other institutions on cat and dog policy.
Since founding Animal Balance, Clifford has used the M.A.S.H. (Mobile Animal Sterilization Hospital) model in places as varied as Havana, Aruba, New Providence in the Bahamas, Saipan, Samoa, and Cabo Verde, successfully adapting the same basic system of mobile surgery, education, and legal change to each community.
Because so many of you wanted to understand the mechanics behind the story, the M.A.S.H. model, the ordinance that made it law, and the “No-Birth Movement”, Emma agreed to a follow‑up, in‑depth interview.
What follows is a conversation about how the Galápagos system functions day to day, how M.A.S.H. can be scaled and replicated across the United States, and what legal, political, and cultural changes are needed for one American community to “prove Galápagos at home.”
The Interview
What Galápagos Proves
ANIMAL POLITICS: For readers who met your work in “The Island That Ended Pet Overpopulation,” how would you describe, in plain terms, what the Galápagos system looks like today, and what problem it solved that most U.S. communities have not?
Emma: First, I want to thank your audience for reading and commenting on the first article. It has been wonderful to engage with your readers, Ed, and to share further stories and examples.
Before I take you to the islands and back, I want to explain who this sector of animal welfare is. We, HQHVSN (High Quality, High Volume, Spay/Neuter) folks, are a subsection of U.S. animal welfare: efficiency‑focused, organized, with a very specific veterinary skill set, and an intense focus on standard operating procedures, SOPs. Because our brains are so efficiently focused, we can see how to make the animal welfare system more efficient and, at the same time, more humane.
There are three types of HQHVSN clinics: brick‑and‑mortar clinics that serve their local population; spay/neuter vans that can reach communities but have limited services; and M.A.S.H., mobile animal sterilization hospitals that can set up a full clinic for a short period in a suitable, borrowed building.
Now let’s jump over to the Galápagos Islands and look at what can be achieved in humane population and disease control when we approach things differently. Today, the Galápagos uses a peaceful form of animal control and management that protects the community and their cats and dogs, while also protecting the delicate native and endemic species who live alongside them.
It is one of the most controversial places on the planet to introduce humane animal control, which is one of the reasons we chose it, to prove that M.A.S.H., which by its nature always includes TNR (trap, neuter, and return), works in any environment.
There are three core components of the program: veterinary excellence in HQHVSN M.A.S.H. clinics; educational outreach and assistance directed to all sectors of the community; and legal work to update ordinances and regulations so a fully humane approach can be enforced.
Twenty years ago, legal lethal methods such as poisoning were regularly used to control dogs and cats. Today, now that most companion animals are already sterilized and vaccinated, the focus has shifted to strengthening education, which is crucial for long‑term compliance, responsible ownership, and a stable population.
Every island in the Galápagos now has a municipal urban fauna department responsible for enforcing ordinances and guiding the relationship between people and their companion animals. This structure marks a shift from reactive animal control to a governance model built around responsibility, prevention, and coexistence.
When a dog is found loose, the intervention is simple but effective: they are humanely captured and moved to the Transit Center until reclaimed by their family. The Transit Center acts as provisional housing, not as a shelter.
What set Galápagos apart was the philosophical choice to invest in strategy and operational capacity. Instead of building shelters, we built surgical capability, trained Ecuadorian veterinarians, and deployed M.A.S.H.–style infrastructure that responded to actual needs. The priority was preventing overpopulation at its source, because protecting wildlife and avoiding lethal control depended on fast, sustained, humane reduction of stray and roaming populations.
This approach required something deeper than logistics: trust. Trust from authorities to improve ordinances. Trust from communities to take ownership of their animals. Trust from partners to focus on long‑term solutions rather than expanding a shelter system that can never keep up with the birth rate.
At its core, the model is relational. We invest in people, knowledge, and shared responsibility, not in cages.
From No-Kill to No-Birth
ANIMAL POLITICS: You’ve talked about M.A.S.H. and the “No-Birth Movement” as the next evolution of animal welfare, not as an attack on No-Kill or what came before. How do you explain this new strategy to people who have invested years in the No-Kill framework so they don’t feel blamed, but invited into a new phase?
Emma: I visualize us as being in the same social change movement together, the animal welfare movement, one that is based in kindness towards all sentient beings. Internationally, we had to use a model that requires fewer resources, and because of that we have learned. We became incredibly efficient at what we do and, along with many others around the world, developed a different approach. Now we have brought it home to the U.S. and are inviting the animal welfare movement to embrace it, to recognize the No-Birth Movement as the next stage in U.S. animal welfare.
I will stay in my lane here, Ed. I focus on humane population and disease management for cats and dogs. I am not going to speak to U.S. shelter reform per se, only as it pertains to overpopulation.
No-Kill shook up the animal welfare movement in the 1990s. “Pounds” became “pet resource centers.” That kind of social change is enormous and incredible to witness across a country as vast and varied as the U.S. To refocus the huge national animal welfare funders on the No-Kill movement was a massive accomplishment.
No-Kill is based on kindness, stopping the systematic, socially unacceptable practice of killing cats and dogs on a weekly basis, while acknowledging that some animals may have to be euthanized for unrepairable behavior or painful injuries or disease. We all support that goal. It took the blame off the shelter and asked the community to help. That is the same strategy we use on the islands: involving the community, the funders, and the politicians. Without an ounce of doubt, the No-Kill movement shifted us forward and showed us that change is possible on a national scale.
Now we are in a different situation. The number of animals in our communities has not necessarily decreased, but the killing of them has. Today there is a massive need for spay/neuter services. The U.S. has the resources, but there needs to be a refocus. We must stop overpopulation, not continue to fuel it.
To achieve this, we need to embrace the M.A.S.H. strategy, which the U.S. is only recently becoming familiar with. It is well known internationally, and thousands of U.S. HQHVSN vets travel to other countries to donate their skills and help others solve overpopulation issues. M.A.S.H. is not a spay/neuter van or a brick‑and‑mortar clinic. It is a third option for HQHVSN services, and one that we know will be key in solving overpopulation of cats and dogs in the U.S.
Our country is ready for the next step forward. The best way to frame, or market, that is to understand the history of animal welfare as chapters. The No-Birth Movement follows on from the No-Kill Movement. It is the next logical and humane chapter of animal welfare in the United States.
Inside a M.A.S.H. Clinic
ANIMAL POLITICS: From the beginning, how intentional were you and your partners about designing the Galápagos approach, M.A.S.H., policy, and governance as something that could be lifted out of a fragile archipelago and applied in an ordinary city or county in the United States?
Emma: The entire goal of the M.A.S.H. model is to design it so it can be replicated and scaled up or down, anywhere in the world, to humanely reduce cat and dog populations.
Honestly, I wanted volunteers to join us and then say, “If she can do it, so can I.” Some did, and all these non-profits are now very successful at humane population control: BAARK in the Bahamas, Soul Dog in Colorado, United Dogs of Aruba, Darwin Animal Doctors, and Saipan Cares for Animals. Other groups formed because people volunteered with Animal Balance and became inspired by the M.A.S.H. model.
Today there are scores of international NGOs that use M.A.S.H. because we have taught one another. The M.A.S.H. clinics are self-taught systems. We have shared techniques and SOPs for decades. It truly was, and still is, kind people sharing their experiences so that this strategy can live on.
It may surprise people to learn that the Boomer generation of traveling spay/neuter vets, often called “field vets,” taught the Generation X vets how to spay and neuter animals efficiently. To mention only a few of these incredible teachers: Dr. Larry Richmond, Dr. Eric Davis, Dr. Diego Barrera, Dr. Lew Sienderberg, Dr. Julie Levy, Dr. Eric Jayne, Dr. Dorothy York. I am sure your readers also know that special vet who taught them. They passed these skills on to the next generation.
We have used the M.A.S.H. model everywhere we have worked, from the Old City of Havana in Cuba, to fishing villages in the Dominican Republic, bustling towns in Trinidad, the whole island of Aruba, the entire island of New Providence in the Bahamas, post hurricane Barbuda, Saipan, American Samoa, Independent Samoa, and Cabo Verde in Africa. We connect with the local group and teach them the strategy. They teach us how they live with dogs and cats, their political objectives, and their veterinary resources. Together we find a suitable model.
The international model usually requires grant funding, sometimes with government funds passed through a local NGO. In the United States the model can run on a low cost business approach with support from foundations. That is the key, working together.
Bringing the M.A.S.H. model to the U.S. will revolutionize animal welfare. The barriers that now exist for access to spay/neuter will diminish. M.A.S.H. is a mobile animal sterilization hospital that can be set up in any suitable building, one with a large room, water, power, and climate control. It can be sustained by tax dollars or municipal support, donations, and the support of the community.
In the U.S. we borrow existing spay/neuter clinics or find buildings in the center of a community that will meet veterinary permit regulations. We work with the partner organization to find the buildings, then we borrow them for a short period and perform a minimum of 200 surgeries over three days.
While we clear their backlog of spay/neuter surgeries, we also teach the partner group how to create a sustainable business model for their community. It is a very simple model that relies on precise logistics and positive human relationships at every level. Every community has the potential to create its own M.A.S.H. program.
ANIMAL POLITICS: When you bring this model into U.S. shelters, what does it look like on the ground?
Emma: If you look at Los Angeles Animal Services, we worked in their city buildings with funding from the Michelson Found Animals Foundation to perform six clinics and spay or neuter at least 1,200 animals housed at, or fostered out by, LAAS. We also connected with local rescue groups that were housing many LAAS animals and sterilized their animals too. The LAAS Commissioners toured the clinic and then they truly understood how the clinics work.
One day at LAAS I looked up from my station and saw local LA rescuers, LAAS staff, the medical director, commissioners, and the Animal Balance team all working together like clockwork. Everyone had a role. They felt confident in that role and they were part of a larger goal.
When an animal control officer is high fiving an Animal Balance tech and saying “who is next,” and I see them carefully handling and pre-medicating patients together, knowing the vets will close their current surgery in one minute and the next animal must be on the table in two, it is incredible. It works.
The center of everyone’s vision is the animal in front of them. The animals are the conduit that brings us together to act with kindness toward each other and toward them.
When we are invited to help with backlogs in places like Los Angeles or Riverside County, we set up a HQHVSN M.A.S.H. clinic in or near the shelter and simply start work. Once we have explained the M.A.S.H. model and checked every legal requirement, we demonstrate that M.A.S.H. fits efficiently and safely into any existing shelter system.
During the time we clear the backlog, often around 800 spay/neuter surgeries, we get to know the partner. We find out where their staff can join us. Maybe their animal control officers transfer animals from shelter cages to the temporary M.A.S.H. clinic. Maybe their techs work alongside our techs at the prep station. By the end of the three day clinic, after they have been through orientation and learned the SOPs, we are one team.
Animal Balance has a positive approach and never disrespects the host organization. We are being graciously hosted, so we are not going to tell them how to run their shelter. We make space for them to be able to make different choices, while giving their team new skills and new experiences with HQHVSN vets and techs.
If we were asked to implement a true Galápagos style mandate in a U.S. community, we would suggest several key changes so the framework exists to grow a humane population and disease management program.
That includes premise permit changes so M.A.S.H. groups can use community centers and gymnasiums, a “Spay Pass” so HQHVSN vets and techs can fly in from any state, and shelter redesigns that turn cage space into spay/neuter clinics while dogs move into foster to adopt homes.
Those details describe the core experience. It is one coordinated team using a simple, precise system, focused on preventing the next litter rather than reacting to the last one.
What Has to Change in Law
ANIMAL POLITICS: In Galápagos, law and policy, mandatory sterilization and microchipping, breeding and sales restrictions, and enforcement authority are central to sustaining the gains from M.A.S.H. and HQHVSN work. What kinds of legal or policy changes would a U.S. city or county need to adopt if it were serious about replicating the model, rather than just running more clinics?
Emma: Historically, the animal welfare movement has focused most activity on shelters. It is important to look at pet population control across the whole community and the whole state. We tend to focus on shelters because animals there may be most at risk of euthanasia, but who is actually producing the most puppies and kittens in your state? It might be licensed breeders. It might be the person without a vehicle who cannot reach the spay/neuter center. We need to know this from a “helicopter” perspective.
To build a true M.A.S.H. based No-Birth system, I look for a few key changes.
Update the veterinary premise permit so M.A.S.H. groups can use community centers and gymnasiums, not just traditional clinic spaces.
Update out of state vet requirements so HQHVSN vets and techs can use a “Spay Pass” and fly in from any state to work a clinic.
Change commerce laws so that dogs and cats are not treated as products. As we work toward that, introduce a “spay tax” for anyone breeding dogs and cats. Every birth would fund a spay or neuter at a local shelter.
Require shelter medical programs to teach the M.A.S.H. model and HQHVSN techniques, and adopt M.A.S.H. SOPs. Most undergraduate vets are taught how to perform a fast spay/neuter but are not given the chance to become proficient, so they learn on M.A.S.H. campaigns like ours.
Invite private practice veterinary groups to a M.A.S.H. clinic to tour and assist when they are able, so they understand the standard of care and the impact.
Encourage well-funded foundations and institutions to recognize the No-Birth Movement as the next chapter and create “start-up” grants that include equipment kits, training, and even vehicles so new groups can reach remote communities.
Ask large shelters to consider redesigning. Where possible, move dogs into foster to adopt homes after spaying, expand the foster network, and turn cage space into a M.A.S.H. style clinic that serves their own animals. That building then becomes the M.A.S.H. hub for the region.
All laws need to evolve as society becomes kinder and more compassionate. The Animal Politics reader will see other legal hurdles in their own state. My invitation is to start changing them.
ANIMAL POLITICS: You have said that changing state premise permit rules and enabling HQHVSN veterinarians to implement M.A.S.H. are key to launching this new wave of animal welfare. What specific regulatory changes are needed, and what are you hearing from vets and their associations when you raise these issues?
Emma: We must begin by reviewing the veterinary premise permit regulations for each state. These regulations tell you how to set up a clinic. They are important because there have to be rules to ensure high quality care, but they need to be understood first and then adapted for M.A.S.H.
In California, for example, we must ensure the surgery suite is separated from the rest of the clinic by walls and a door that closes. We normally use one room for a M.A.S.H. clinic, so we had to adapt the model. Ideally we would use one room, such as a community center, and have the regulations reflect that.
If you want to maximize your ability to spay and neuter animals in one community, you must also make it very difficult and very expensive to breed dogs. You cannot “turn off the tap” on overpopulation if someone else can fill that gap and profit from puppy sales. Banning this type of commerce at state and federal levels is ideal. A step toward that ban is a spay tax. For example, every dog born for sale would require a donation to the local shelter to cover the cost of one sterilization.
You must also know key data about your dog and cat populations. Where are the unaltered animals and who owns them? Can you put your M.A.S.H. clinic in the center of the neediest area so people can walk their dogs to you? Can you place a clinic near a shelter medical program and invite in undergraduates? What resources already exist in your area and how can you connect them all?
In our conversations with the California Veterinary Medical Board, we had to start by explaining what the M.A.S.H. strategy is, even in a room full of experienced veterinarians. That shows how new this is to the U.S. The response has been positive. Some board members had been on Rural Area Veterinary Services trips or had shelter experience and knew how desperate the need for sterilization is. They asked about complication rates and standards of care, which showed their concern for families and their pets. We explained our SOPs, answered questions, and invited them to visit clinics. Some already have.
If HQHVSN vets and techs in the U.S. were given Spay Passes and could travel freely to provide these services, it would be very popular. If premise permit regulations were updated so we could use community centers and gyms, we would remove major barriers to veterinary care for families and shelter animals. We can get to the animals with the right resources, and they can get to us. That is what will unlock the No-Birth Movement in the United States.
Who Will Be First?
ANIMAL POLITICS: If a U.S. jurisdiction came to you tomorrow and said, “We want to prove the Galápagos model here,” what level of commitment, in funding, staff, and years, would they need to give this strategy a fair test? And what do you say to mayors, county executives, and national groups about why one of them should be first?
Emma: Ed, they could do it as soon as they change the pet commerce laws and any restrictive veterinary premise permit regulations. It is extremely easy and low cost to breed dogs. It is expensive and complicated to spay them. We are already seeing city and county council members and commissioners step up and pay for M.A.S.H. clinics. Municipalities are our partners more than half of the time, which may surprise people. They understand the issue of overpopulation and related euthanasia in their communities. They must listen to residents and respond, and most community members support kind animal care.
They also have the power to change pet commerce in their state. I believe they will, as some national groups are now pushing for this. They do not want to keep paying for the results of breeding. They want to stop overproduction in a balanced way. We already see positive results with our partners after a series of HQHVSN M.A.S.H. clinics. Each place is different in size, but most see more positive outcomes for animals in their care within a few months.
At this point, I have to assume that many foundations and council members do not know about, or do not fully understand, the M.A.S.H. model. When I meet with shelter directors and supporting nonprofits, they often think M.A.S.H. is a spay/neuter van. We explain how it works and, very often, this is new information.
The United States has plenty of resources to fund M.A.S.H. clinics. It appears that we continue to fund the outcome of overpopulation instead of preventing it. I have to assume that the power of the model has not yet been acknowledged. I am hopeful that they will embrace the No-Birth Movement as the next step.
M.A.S.H. is already an accepted international strategy. It is not new outside the U.S., but inside the U.S. it is still not widely known. We are a somewhat underground movement that is growing through vets, techs, assistants, shelter directors, and politicians. It is exciting that we, and other M.A.S.H. experts, can bring a “new strategy” home.
We need decision makers to ask questions and learn about the model, to keep open minds, and to host respectful debates about how to implement M.A.S.H. in each community. We need grant makers to review their priorities and, starting now and into 2026, pilot M.A.S.H. clinics with local groups so they can see that it works.
If one U.S. city or county fully embraced the Animal Balance M.A.S.H. model and the No-Birth Movement, success would look very clear. The No-Birth Movement would be accepted as the next step from No-Kill and become normal language.
National groups, attorneys, local nonprofits, and shelters would work together to change premise permit regulations so true M.A.S.H. clinics could operate in community centers and gyms. HQHVSN vets and techs would travel on a national Spay Pass to serve the states that need the service most. Shelters and adoption centers would house adoptable animals in homes and convert cage areas into spay/neuter centers. Shelter medicine programs would routinely teach HQHVSN SOPs and give students chances to work in M.A.S.H. clinics.
You would see dogs and cats who used to fall into the “overpopulation” category living with families. The “shelter,” which became a “pet resource center” during the No-Kill era, would evolve again into animal management services and consistent spay/neuter and contraception services.
Foundations would provide seed grants for M.A.S.H. clinics, and governors would redirect funding to humane population and disease control. First Nations communities would have the same regular access to these services. Population data on dogs and cats would be shared and used to guide policy. That is what proving Galápagos in America would mean.
Simply put, you have too many cats and dogs being born in your state, which creates an overpopulation problem that is very expensive to manage. Instead of spending funds on the outcome of overpopulation, erase it using this model and prevent it from happening again.
If you immediately refocus your funding and resources on sterilization services for cats and dogs, you will be investing in the only solution that works, because we have already proven that killing cats and dogs does not work.
You must also connect with the people who are breeding cats and dogs for sale and help them understand how they are affecting the state’s objective. To erase overpopulation using humane methods, breeders have to be part of the solution.
If you embrace the No-Birth Movement and create the model in your community, your community will become more closely connected in a positive way. By leading this movement, you bring all the entities together and they will support you strongly.
On Isabela Island in the Galápagos, the mayor implemented the kindest ordinance I have ever seen, and he became the local hero. Positivity draws more positivity. That is the outcome of M.A.S.H. clinics. They are locally based, inclusive community events with a solution focused goal.
Everyone feels positive about the outcome because they took part in something good. If you step forward and allow true M.A.S.H. clinics to happen regularly in your community, working directly with key partners, you will directly address your overpopulation crisis and help write the next chapter of animal welfare in the United States.
Where to Start in Your Community
For HQHVSN vets and techs
Visit existing Animal Balance M.A.S.H. clinics to see how precise, structured, and professional they are, and to understand their true capacity.
Join clinics in other regions to learn techniques, timing, equipment, and SOPs, so you are ready when your own community changes its premise rules.
For shelter and rescue leaders
Host a M.A.S.H. clinic in or near your shelter to clear surgical backlogs while your staff trains side by side with experienced HQHVSN teams.
Begin planning to redesign space so more animals live in foster-to-adopt homes and more square footage becomes dedicated to high volume spay/neuter.
For mayors, councilmembers, and foundations
Initiate premise‑permit reforms that allow true M.A.S.H. clinics in community centers and gyms, and explore a Spay Pass for visiting HQHVSN vets and techs.
Shift funding from managing overpopulation to preventing it by underwriting M.A.S.H. pilots, equipment kits, and local training so your community can prove the model.
ANIMAL POLITICS’ goal is to surface models that move animal welfare from crisis management to prevention, with enough detail that local leaders can act. The Galápagos system, and Emma Clifford’s work across multiple countries, show that a humane, prevention‑first approach to dogs and cats is not theoretical. It already exists.
To Contact Emma Clifford:
To learn more about Animal Balance’s M.A.S.H. clinics or to explore bringing a pilot to your community, you can reach Emma by email at clifford@animalbalance.org, via the website: www.animalbalance.org, https://www.facebook.com/AnimalBalance/ and @animalbalance for instagram. They also have a dedicated website for the Galapagos Islands: https://www.animalbalancegalapagos.org/
Ed Boks is the former executive director of animal care and control agencies in New York City, Los Angeles, and Maricopa County, and a past board member of the National Animal Control Association. His work has appeared in the Los Angeles Times, New York Times, Newsweek, Real Clear Policy, Sentient Media, and now on Animal Politics, a lively community spanning 48 states and 61 countries.
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I don't even know where to start. This article is pure inspiration, yet common sense and clearly "No Birth" is the next evolution for the adulterated "No Kill" movement.
Thank you for helping in Albuquerque, New Mexico the past few years! I have been a volunteer at the clinics and there is a joyful energy in the room each time I go to one. Also thank you for all you have done in Galapagos and other areas outside the US, what a wonderful feeling for all those involved in this success!
Unfortunately we have a very high pet overpopulation per capita as you know in the south and here in New Mexico. It is hard to understand the numbers as there is a lack of transparency, even in the Albuquerque area shelters. We also have a strong community of rescuers, however there will never be enough foster homes unless change becomes a more interesting model.
The directors have the best relationship with the local government to make the difference as they have the biggest voice and connections to the local government. What your thoughts are on getting a city like ours to be the first city to make this turnaround? (We have a mayor that likes animals, which is good!)
I guess I’m asking how to market/sell it to the existing players, as their buy in as you know is most important. Is there something I are missing or that isn’t being addressed? Why wouldn’t this be something a shelter director would be doing everything possible to do? I would think it would make them a superstar and would advance their career, as per how people perceived the Mayor of Galapagos….