Dogs are abandoned primarily because of behavioral problems, housing instability, and owners who find themselves unable to keep up with the demands of care. A large-scale analysis of over 2,800 shelter records from 2018 to 2023 found that behavior issues alone accounted for 35% of dog surrenders, making it the single biggest reason dogs end up in shelters. But the full picture is more layered than any single cause, and the reasons often overlap.
Behavior Problems Are the Top Reason
More than a third of dogs surrendered to shelters are given up because of behavioral issues. That 35% figure is significantly higher than the rate for cats (21%), which reflects something important about the species: dogs require more active training, socialization, and management than many first-time owners anticipate. Aggression, destructive chewing, excessive barking, house soiling, and separation anxiety are among the most common complaints.
Many of these problems are preventable or treatable with consistent training, but owners who didn’t expect them often feel overwhelmed. Breakdowns in the owner-pet relationship frequently happen because the owner had unrealistic expectations of what living with a dog would involve, or didn’t understand breed-specific behaviors and energy levels. A person who adopts a high-energy herding breed expecting a calm couch companion, for example, is set up for frustration on both sides. By the time behavior escalates to the point of surrender, the owner has often already decided the situation is unfixable.
Housing and Moving
Housing instability is the second most common reason, cited in about 18% of surrenders overall. This category covers a wide range of situations: moving to a new city, a landlord changing pet policies, breed restrictions in rental housing, and becoming unhoused entirely. In competitive rental markets, landlords increasingly impose rules that ban pets altogether or target specific breeds and larger dogs. A family that owned a home and had plenty of space for a large dog may find, after a divorce or job loss, that their only affordable rental option doesn’t allow the animal.
This is one of the most frustrating causes of abandonment because the owner often still wants the dog. Shelters report that housing-related surrenders are among the hardest to prevent, since the organization can offer training help or veterinary assistance but can’t conjure up a pet-friendly apartment in a tight market.
Owners Who Can’t Keep Up
About 19% of dogs are surrendered by owners who feel unable to provide adequate care. This isn’t about money specifically. It’s about time, energy, and life circumstances. Common scenarios include working long hours with no one home for the dog, a new baby consuming all available attention, a serious illness, or a family member entering a care facility. Some owners in this category explicitly say they want the dog to have a better quality of life than they can offer, which makes this group distinct from those dealing with behavioral frustration.
The “too many pets” category adds another 10% to the picture. Households that accumulate animals gradually, whether through unplanned litters or a pattern of impulse adoption, eventually hit a tipping point where the number of animals exceeds their capacity to feed, house, and care for them all.
Financial Pressure
Financial reasons are cited in about 6% of shelter surrenders, but that number almost certainly understates the role money plays. Cost pressures often hide behind other categories: an owner who surrenders a dog for “behavior issues” may have been unable to afford a trainer, and someone who says they’re “unable to care” for the dog may really mean they can’t afford veterinary bills.
Research from South Korea found that rising unemployment, decreasing income, and increasing tax burdens all predicted higher rates of pet relinquishment in a community. A Spanish study showed that “economic issues” jumped to become the single most common abandonment reason during that country’s economic crisis in 2013, up from a much lower ranking just three years earlier. In the U.S., one survey found that more than three-quarters of people surrendering dogs pointed to cost as a contributing factor, most frequently citing an inability to pay for veterinary care. Larger dogs cost more to feed, medicate, and board, which is why economic downturns hit dog retention harder than cat retention. One shelter director reported a 40% increase in local dog surrenders in a single year during a period of financial strain.
Large Dogs and Certain Breeds Are Hit Hardest
Shelters consistently report that large dogs and breeds subject to housing restrictions are overrepresented in their intake numbers. Breed-specific bans in rental housing, homeowner insurance policies, and even municipal ordinances make it harder to keep dogs that fall into restricted categories, regardless of the individual animal’s temperament. Pit bull-type dogs, Rottweilers, and other breeds commonly named in these policies cycle through the shelter system at disproportionate rates.
Size alone is a factor independent of breed. Bigger dogs eat more, need more space, require stronger (and more expensive) containment, and are harder to place in rentals. Shelters have also noted a recent increase in purebred dogs and puppies entering the system, a shift from the historical pattern where mixed-breed adults made up the bulk of intake.
The Pandemic Effect
The COVID-19 pandemic created a unique wave of pet acquisition followed by a surge in surrenders. During lockdowns, adoption rates soared as people working from home had more time and wanted companionship. Relinquishment rates actually dropped during this period. But as lockdowns ended and people returned to offices, the pattern reversed sharply. Shelters reported dramatic increases in surrenders once restrictions lifted.
Many of these pandemic-era dogs had been raised in an unusual environment: constant human presence, limited socialization with other dogs or strangers, and little exposure to the normal rhythms of a household where people leave for work. The result was a cohort of dogs with higher rates of separation anxiety and behavioral problems. Rescue organizations reported that the dogs coming in post-lockdown were not only more numerous but also carried more behavioral and health problems than pre-pandemic intakes. Shelters describe a persistent gap between the number of animals entering and the number leaving, a backlog that continues to strain capacity.
Unrealistic Expectations
Running through nearly every category of abandonment is a common thread: the gap between what people expect dog ownership to look like and what it actually requires. Dogs need daily exercise, mental stimulation, consistent training, veterinary care, and years of commitment. A puppy that’s cute at eight weeks will be an adolescent with boundary-testing energy at eight months and a full-grown animal with set habits by two years. Each of those stages demands different things from an owner.
People who acquire dogs impulsively, whether from a breeder, a pet store, or even a shelter, without researching the breed’s needs, calculating the long-term costs, or honestly assessing their living situation are far more likely to end up in a position where surrender feels like the only option. The decision to give up a dog is rarely made lightly, but it’s often made predictably, by someone who didn’t have the right information at the start.