Multi-Pet Household Statistics USA

Owning more than one pet has become increasingly common in the U.S. — and the generational split is sharper than you might expect. Gen Z leads in the share of owners with multiple pets, while Gen X is expanding fastest across the widest range of species. Here's what the data shows about how many pets U.S. households actually keep.

How Common Are Multi-Pet Households?

Per APPA's National Pet Owners Survey data, as reported by Pet Food Industry, 70% of Gen Z pet owners have two or more pets — the highest share of any generation. Gen X posts the highest multi-pet ownership rate among all cohorts at 54% owning two or more pets. Gen Z currently makes up about 20% of all pet-owning households (roughly 18.8 million homes), a segment that grew 43.5% year-over-year from 2023, while Gen X accounts for roughly 25% of pet-owning households.

Average Pets Per Household by Species

Averages vary considerably by species and have shifted over time. Dog-owning households average 1.6 dogs each, a figure AVMA reports has stayed essentially consistent since 1987. Cat-owning households average 1.8 cats each — down from 2.2 in 1987, according to the same AVMA demographic tracking. That decline in average cats-per-household, even as total cat ownership has grown, suggests more households are adding a single cat rather than expanding an existing multi-cat household.

Which Generation Is Driving Multi-Species Households?

Gen X isn't just the generation most likely to own multiple pets of one species — it's also expanding fastest across species types. Year-over-year, Gen X dog ownership rose 12%, cat ownership rose 8%, and ownership of birds, reptiles, and freshwater fish rose 25%, 20%, and 17% respectively, per the same industry report. That points to Gen X households increasingly mixing species — a dog or cat alongside a smaller exotic pet — rather than simply adding more of the same animal.

The Big Picture

Multi-pet ownership isn't one trend, it's two: Gen Z is most likely to have multiple pets per household, while Gen X is the fastest-growing group by household count and the one diversifying most across species. Meanwhile, the average dog-owning household (1.6 dogs) has stayed remarkably stable for nearly four decades, while the average cat-owning household has quietly shrunk from 2.2 to 1.8 cats. As with most pet-ownership data, these figures come from a mix of primary AVMA demographic surveys and trade-press reporting on APPA's National Pet Owners Survey — we've cited both explicitly rather than presenting secondary reporting as an original source.