The Millennial Who Wants a Big Dog Can't Have One. The Data Explains Why.

New national research finds that Gen Z and Millennials are the most likely to adopt large dogs — and the most systematically blocked from doing so.

There is a version of this story where the solution to the large-dog shelter crisis is simple: younger generations love big dogs, so just get younger people to adopt more of them. The new Hill's Pet Nutrition 2026 State of Shelter Pet Adoption Report tells a more complicated story.

The report, released this week, surveyed 2,000 Americans across socioeconomic backgrounds about their attitudes toward shelter adoption with a specific focus on large dogs. The findings confirm what many in the animal welfare space have suspected for a while: the people who most want to adopt large dogs are the people most likely to be prevented from doing so.

The Numbers

According to intake data from Shelter Animals Count, 2.8 million dogs entered U.S. shelters in 2025. Large dogs made up just 26 percent of that total, but they stayed longer and got adopted less often than their smaller counterparts. The shelter overcapacity crisis, which has been running for five consecutive years by most measures, is hitting large dogs hardest.

Thirty-five percent of Americans surveyed said they were likely to adopt a large dog. Another 19 percent said they were neutral — not opposed, not committed. The report frames that neutral group as a real opportunity. With the right information and support structures, some portion of those people could be moved toward yes.

But here is where the generational picture gets interesting. Gen Z and Millennials were nearly twice as likely to consider adopting a large dog from a shelter than Gen X and Baby Boomers — 30 percent versus 16 percent in the 2026 report, a pattern that has been consistent across multiple years of Hill's research.

The Wall They Keep Running Into

The enthusiasm among younger adults is real. The obstacles are also real, and they are largely structural rather than personal.

Younger Americans are more likely to rent their homes. They are more likely to live in apartments. And they are more likely to face pet-related restrictions in their leases — weight limits, breed restrictions, pet fees, and monthly charges that can add hundreds of dollars to the cost of keeping an animal. The 2025 Hill's report found that monthly pet fees affect 20 percent of Gen Z and Millennial renters, compared to 10 percent of Gen X and Baby Boomers. Pet deposits run at 21 percent versus 13 percent.

These are not barriers that resolve themselves with more enthusiasm or better information. They are baked into the housing market. A 27-year-old who genuinely wants a 70-pound rescue mix and cannot find an apartment that allows one has run into something that no amount of shelter outreach programming can fix.

Of those who have surrendered a pet, 21 percent cited moving to housing that did not allow their type of pet as the reason. That is a significant share of surrenders that trace directly back to the same structural problem: the rental market is not built for large-dog ownership.

The Confidence Problem Is More Fixable

The 2026 report identified low adopter confidence as a major driver of hesitancy separate from cost or housing. Eighty-nine percent of likely adopters felt confident they could handle a large dog. Among unlikely adopters, that dropped to 33 percent.

That's a gap that education, community programming, and supportive adoption practices can actually address. Shelters and rescues that invest in pre-adoption counseling, meet-and-greet sessions, and post-adoption check-ins are working directly against that confidence barrier. The 2025 data showed that 95 percent of owners who received post-adoption support when they were considering surrender ultimately kept their pet. That number should be on a poster somewhere.

What Would Actually Help

The survey asked respondents what would most likely increase their willingness to adopt a large dog. Lower adoption fees came out on top at 34 percent. Free or discounted training followed at 31 percent. Financial assistance with initial costs was also at 31 percent.

These are not surprising answers, but they are useful ones because they point toward specific levers. Reduced-fee adoption events for large dogs. Partnerships with certified trainers. Financial assistance programs for first-year vet costs. These are programs that shelter and rescue organizations can build, and that community partners — including veterinary practices — can support.

Hill's has been producing this report annually since 2023, and this fourth edition is the first to zero in on a specific population of shelter animals. The fact that large dogs warranted their own spotlight after years of appearing in broader shelter data as a recurring problem is itself a signal. The industry is running out of easy explanations for why these animals keep getting left behind.

The younger generation that would most likely take them home is, in too many cases, living in apartments that won't allow them through the door. That's the problem this data is really describing. The path forward probably involves housing policy as much as adoption programming — but the research is at least making the connection visible.

Source: Hill's Pet Nutrition 2026 State of Shelter Pet Adoption Report; Shelter Animals Count / ASPCA. Full report at HillsShelterReport.com.