Horses are sent to slaughter primarily because their owners can no longer afford them, no longer need them, or can’t find another home for them. In 2024, nearly 20,000 American horses were exported to Mexico and Canada for slaughter, despite the fact that no slaughterhouses currently operate on U.S. soil. The reasons behind those numbers are a mix of economics, industry practices, and a shortage of second chances.
The Most Common Reasons Owners Give Up Horses
When researchers survey horse rescue organizations about why animals are surrendered, the answers fall into two categories: problems with the horse and problems in the owner’s life. On the horse side, health issues top the list at 54%, followed by unsuitability for the owner’s intended purpose (28%) and behavioral problems (28%). On the owner side, financial hardship accounts for 52% of surrenders, followed by illness or death of the owner (27%) and simply not having enough time (16%).
Beyond those broad categories, the specific triggers are varied: a divorce that splits a household’s income, an aging horse that develops chronic lameness, a young horse that turns out to be too unpredictable to ride safely, or a foal born the wrong color for a breeder’s market. The Unwanted Horse Coalition defines an “unwanted” horse as one that is old, injured, sick, unmanageable, too expensive, or one that fails to meet expectations. That last category is broader than most people realize. A horse can be perfectly healthy and still be unwanted because it’s not athletic enough, not the right build, or simply costs too much to keep around.
What It Costs to Keep a Horse
The financial pressure behind many of these decisions becomes clearer when you look at the numbers. Boarding alone runs $3,000 to $12,000 per year depending on location and services. Feed adds another $1,200 to $2,500 annually. Hoof care costs $400 to $800 a year, and routine veterinary care adds $200 to $500 on top of that. A horse owner paying for full boarding and basic care can easily spend $5,000 to $15,000 per year on a single animal, and that’s before any emergency vet bills.
When a horse can no longer be ridden, bred, or shown, the owner is still paying those costs with no return. An older horse with arthritis or a retired racehorse with a tendon injury might live another decade or more. For owners facing job loss, medical bills, or a change in life circumstances, the math stops working. Humane euthanasia and body disposal cost roughly $400, but many owners either can’t afford it, aren’t emotionally prepared for that choice, or don’t realize what happens when they sell their horse at a low-end auction.
The Racing and Breeding Pipeline
Certain industries produce horses at volumes that guarantee a percentage will end up unwanted. Thoroughbred racing and Standardbred harness racing are the clearest examples. An Australian study of auction houses found that racing breeds were dramatically overrepresented among horses purchased by slaughterhouse buyers: 64% of Thoroughbreds and Standardbreds at auction were bought by slaughter buyers, compared to just 28% of non-racing breeds.
The pattern makes sense when you consider how these industries work. Thoroughbred breeders produce thousands of foals each year, knowing that only a fraction will be fast enough to race competitively. The ones that don’t make the cut, along with those that break down from injuries during their racing careers, need to go somewhere. Standardbreds face the same cycle. Quarter Horses, the most popular breed in the U.S., also show up in high numbers at auction simply because there are so many of them. Crossbred and mixed-breed horses, which have less resale value overall, made up the largest single group (30%) at the auctions studied.
How Horses Move From Owner to Slaughterhouse
Since the last U.S. horse slaughterhouse closed, the path to slaughter runs through livestock auctions and across international borders. The key figures in this system are known as “kill buyers,” dealers who purchase horses at auction, often in bulk and at low prices, then arrange transport to slaughterhouses in Mexico or Canada. In 2024, 17,003 horses were exported to Mexico for slaughter and 2,912 to Canada.
The process isn’t always a straight line from auction to truck. Some horses change hands multiple times, passing through brokers and resellers before reaching a slaughter facility. Kill buyers acquire both healthy and unhealthy horses. Some of these buyers also run operations marketed as “kill pens” or “rescue pens,” where they post photos of horses online and claim the animals will be shipped to slaughter by a specific date unless someone pays a “bail” fee. The ASPCA has raised concerns about this practice, noting that the inflated bail prices generate significant profit for the kill buyer, effectively funding their slaughter brokerage business. For well-meaning horse lovers, it creates a cycle where paying to save one horse finances the purchase of more.
Not every owner who sells a horse at auction knows or intends for it to end up with a kill buyer. Low-end auctions where horses sell for a few hundred dollars or less attract these dealers because the prices are low enough to turn a profit on meat sales. An owner who drops off a horse hoping it will find a new riding home may have no idea who actually buys it.
Why Not Just Euthanize Instead?
For horses that are old, chronically ill, or dangerous, humane euthanasia is a straightforward option. But several factors push owners toward auctions instead. Some owners can’t bring themselves to make the decision, especially for a horse that appears outwardly healthy but is simply too expensive to keep. Others genuinely believe the horse will be bought by someone who wants it. And some owners are motivated by the small amount of money they can get at auction, even if it’s only a few hundred dollars, versus paying $400 out of pocket for euthanasia and disposal.
There’s also a capacity problem with rescue organizations. The U.S. has hundreds of horse rescues and sanctuaries, but they operate on limited budgets and can only take so many animals. A horse that needs lifelong care and can’t be adopted out occupies a spot that could rotate to multiple adoptable horses. Rescues frequently operate at or beyond capacity, which means many owners who try to surrender a horse are turned away.
A Food Safety Problem Most People Don’t Know About
One dimension of horse slaughter that surprises many people is the food safety risk. American horses are not raised as food animals. Throughout their lives, they receive medications that are banned in animals destined for human consumption. The most notable is phenylbutazone, commonly called “bute,” the most widely used anti-inflammatory drug in equine medicine. Phenylbutazone is banned from the food supply entirely because it can cause serious and potentially fatal reactions in humans. There’s no safe residue level.
Because the U.S. has no system for tracking medications given to horses over their lifetimes, there’s no reliable way to verify that a horse exported for slaughter is free of these drug residues. The meat from American horses is primarily consumed in overseas markets, particularly in parts of Europe and Asia, where consumers may have no idea the product carries this risk.
Where U.S. Law Stands
No federal law currently bans the slaughter of horses or their export for slaughter. Congress has repeatedly introduced the Save America’s Forgotten Equines (SAFE) Act, which would make it illegal to slaughter horses for human consumption in the U.S. and ban their export for that purpose. The most recent version was introduced in the House in 2023, but it has not advanced beyond the introduction stage. Meanwhile, annual spending bills have consistently blocked federal funding for horse meat inspections, which effectively prevents slaughterhouses from reopening domestically. This creates the current situation: slaughter doesn’t happen on U.S. soil, but tens of thousands of horses are shipped across borders each year to countries where it does.