Shelters across the country are full of mixed-breed dogs, and the full picture is more complicated than it looks

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Animal shelters across the country are restricting or refusing owner surrenders this year, and mixed-breed dogs appear to be absorbing much of the fallout. National Mutt Day belongs to those dogs by design, built for a system with far more room to spare than it has now. For the dogs sitting in kennels right now, the calendar isn’t the point; whether someone opens the door for them is.

Three dogs with collars stand behind metal bars, looking forward. The background is out of focus, suggesting they are inside an enclosure or kennel—an evocative scene that highlights the importance of adoption on National Mutt Day.
Photo credit: Depositphotos.

Every one of those dogs has a story that led it there: a move to an apartment that won’t allow pets over a certain size, a divorce, a vet bill that hit at the worst possible time. None of them got much of a choice in that. National Mutt Day, founded by pet lifestyle expert Colleen Paige, was designed to give mixed-breed dogs at least two chances a year to be noticed, first on Dec. 2 and, years later, again on July 31. Two chances still aren’t enough for dogs with no breed club or single-breed rescue working to pull them out quickly. They’re often the ones left waiting, and in a shelter with nowhere left to put new arrivals, waiting has become its own kind of risk. 

Shelters coast to coast reject surrenders

Charlotte-Mecklenburg’s animal control agency stopped accepting non-emergency owner surrenders after fielding 608 surrender requests so far this year, a 58% jump from the same period last year. Strays are still taken in, as required by law, and emergency cases still qualify for help.

Three thousand miles west, Oakland Animal Services said in June it was severely overcrowded with large dogs and kittens, running at critical overcapacity with 74 dogs and no space for new arrivals. It’s a plea the shelter has made repeatedly in recent years, including a nearly 95% jump in combined cat and dog intake in 2024, a sign of how entrenched the pressure on shelter capacity has become in the Bay Area rather than a single bad month. The shelter’s director, Joe DeVries, asked residents directly to adopt or temporarily take in a dog, saying every large dog that leaves creates a spot for one still coming in.

In Clark County, Nevada, dog surrenders have climbed about 15.2%, and the county’s only open-admission shelter is now taking in close to 90 animals some days. County commissioners have approved a $39 million supplemental shelter to relieve the pressure.

DeKalb County, Georgia, which handles animal services for both DeKalb and Fulton counties, has seen dog surrenders climb 30% and adoption returns rise 43%, according to the nonprofit that runs the shelters there. 

And in New York City, the country’s largest municipal shelter system suspended most owner surrenders in 2025 after topping 1,000 animals in its care for the first time in its history. It has since resumed intake, and a new Bronx facility opening in January is expected to add roughly a third more shelter capacity citywide.

Mixed breeds face the longest odds

Purebreds tend to move through shelters faster, in part because some breed-specific rescue groups pull them out quickly and many adopters often go looking for a particular breed. Mixed breeds have no such pipeline built around them, and many shelter workers and rescue organizations make up the large majority of dogs waiting for homes, though exact estimates vary by study. It’s often the larger dogs among them that wait longest of all. That doesn’t mean shelters are targeting mixed breeds specifically.

The capacity restrictions described above apply to any dog an owner tries to surrender, regardless of breed. Mixed-breed dogs simply make up the biggest share of that population, so a blanket policy lands on them hardest.

Behavior problems remain among the most commonly cited reasons for surrender nationally, but shelter directors in the cities above increasingly point to circumstances beyond the dog itself: rents that have climbed faster than paychecks, landlords who restrict pets by size or breed and vet bills that have outpaced what many owners budgeted for.

National numbers look calmer than local ones

The part that complicates the picture is that non-live outcomes for dogs, meaning euthanasia, deaths and animals lost in care, actually declined nationally last year, while dog adoption rates rose from 55% to 57%. Total intakes were down slightly, too. The crisis isn’t showing up as a nationwide surge but more like a set of local systems absorbing pressure unevenly, cities and counties buckling one kennel at a time while the national aggregate holds steady.

Genetics research is catching up with mutts

Embark, the canine genetics company, is an official research partner of Cornell University’s College of Veterinary Medicine, drawing on a database of more than 2.5 million tested dogs to study how breed ancestry connects to disease risk. That database has already helped researchers studying conditions like a corneal disease common in German shepherds. For mixed-breed dogs specifically, whose genetic backgrounds are harder to pin down by sight alone, that kind of research is starting to fill in gaps a shelter intake form never could.

For now, the dogs waiting in Charlotte, Oakland, Las Vegas, DeKalb County and New York don’t need a study to tell them what they already know. What changes their odds isn’t research or a headline. It’s whoever walks into one of those shelters this week and decides a mixed-breed dog is worth taking home.

Mandy Applegate is the creator behind Splash of Taste and seven other high-profile food and travel blogs. She’s also the co-founder of Food Drink Life Inc., a unique and highly rewarding collaborative blogger project. Her articles appear frequently on major online news sites, and she always has her eyes open to spot the next big trend.

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