Small-pet keeping, by the numbers

What the data says

• Most small pets are not short-term pets. 11 of 23 can live 8 years or more — the longest-lived being the Chinchilla (up to 20 years). The shortest is the Winter White Hamster (about 1.5–2 years).
• Longest-lived: Chinchilla, Flying Squirrel, Rabbit, Sugar Glider — decade-plus commitments that often outlast a child's interest, so plan for the whole life.
• Company is the rule, not the exception: 12 of 23 must live with their own kind, only 6 are genuinely best kept alone, and the rest depend on sex or the individual. "One lonely pet in a cage" is wrong far more often than it's right.
• 52% are beginner-friendly — but "beginner" rarely means low-effort. The difficulty is usually the setup and companionship (space, a friend, the right diet), not the animal being hard to like.

By difficulty

By species group

By diet

By social need

The full dataset (23 species)

Click a column heading to sort. Every figure traces to the linked species guide.

Species ▲	Group	Difficulty	Diet	Company	Lifespan (yrs)
Rabbit	Rabbits	Beginner–Intermediate	Herbivore	Needs its own kind	10–15
Rat	Rats & mice	Beginner	Omnivore	Needs its own kind	2–3
Guinea Pig	Guinea pigs	Beginner	Herbivore	Needs its own kind	5–8
Hamster	Hamsters & gerbils	Beginner	Omnivore	Best kept alone	1.5–3
Syrian Hamster	Hamsters & gerbils	Beginner	Omnivore	Best kept alone	2–3
Roborovski Hamster	Hamsters & gerbils	Beginner–Intermediate	Omnivore	Depends (sex / individuals)	3–3.5
Winter White Hamster	Hamsters & gerbils	Beginner–Intermediate	Omnivore	Depends (sex / individuals)	1.5–2
Campbell’s Hamster	Hamsters & gerbils	Beginner–Intermediate	Omnivore	Depends (sex / individuals)	2–2.5
Chinese Hamster	Hamsters & gerbils	Beginner–Intermediate	Omnivore	Best kept alone	2–3
Ferret	Exotic small pets	Intermediate	Carnivore	Needs its own kind	6–10
Hedgehog	Exotic small pets	Intermediate	Insectivore	Best kept alone	4–8
Chinchilla	Chinchillas & degus	Intermediate	Herbivore	Needs its own kind	10–20
Mouse	Rats & mice	Beginner	Omnivore	Depends (sex / individuals)	1.5–2.5
Gerbil	Hamsters & gerbils	Beginner–Intermediate	Omnivore	Needs its own kind	2–3
Sugar Glider	Exotic small pets	Advanced	Omnivore	Needs its own kind	4–15
Degu	Chinchillas & degus	Intermediate	Herbivore	Needs its own kind	6–9
Prairie Dog	Exotic small pets	Advanced	Herbivore	Needs its own kind	8–10
Chipmunk	Exotic small pets	Advanced	Omnivore	Depends (sex / individuals)	4–10
Spiny Mouse	Rats & mice	Intermediate	Omnivore	Needs its own kind	3–6
Short-Tailed Opossum	Exotic small pets	Advanced	Insectivore	Best kept alone	4–6
African Pygmy Dormouse	Exotic small pets	Advanced	Omnivore	Needs its own kind	5–7
Fat-Tailed Gerbil	Hamsters & gerbils	Beginner–Intermediate	Omnivore	Best kept alone	5–8
Flying Squirrel	Exotic small pets	Advanced	Omnivore	Needs its own kind	10–19

Methodology & sources

This dataset covers the 23 small-pet species with a fact-checked care sheet on Hayfold (our sourced gate). Lifespan is the typical captive range stated in each care sheet; diet and social needare the fact-checked care-model and companionship classifications from those same sheets — verified against the RSPCA, PDSA, the Merck Veterinary Manual and peer-reviewed husbandry sources. Ranges describe typical pets, not extreme records.

⬇ Download the dataset (CSV) — 23 species, ready to chart or re-use.

Keep going:All species ·Compare two small pets ·Which small pet suits me? ·Glossary