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The cheapest pets to own (realistically)

PetCost Editorial Team · Figures cross-checked against NAPHIA, AKC and veterinary RER/MER guidance · Updated 2026-06-02

'Cheap' depends on lifespan, vet needs and food. Here's an honest comparison across species by real lifetime cost.

Among common companion pets, guinea pigs and rabbits have the lowest lifetime cost (short lifespans, cheap food), followed by small cats and small dogs. Horses are by far the most expensive. The cheapest individual breeds are small, healthy and low-grooming.

Across species

Lifespan is the hidden multiplier: a long-lived pet costs more in total even at a low yearly rate. Small rodents and rabbits are cheapest overall; dogs and cats sit in the middle; horses cost tens of thousands. Browse each by species in our pet cost database.

Cheapest breeds

Within dogs and cats, the budget picks are small, healthy, short-coated breeds — see the cheapest dogs and cheapest cats to own.

FAQ

What is the cheapest pet to own?

Guinea pigs and rabbits have the lowest lifetime cost; among dogs/cats, small healthy breeds are cheapest.

Are small dogs cheaper than big dogs?

Yes — they eat far less and usually cost less to insure.

Sources:Estimates use transparent formulas (vet RER/MER for food; NAPHIA averages for insurance). Always confirm with your vet and insurer.

Related

Cheapest dogs to own →
Cheapest cats to own →
Pet cost database →

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