Hamster vs Guinea Pig NZ: Only One of Them Is Legal Here
Hamsters cannot legally be kept in New Zealand; guinea pigs can. How the two species actually differ, why the hamster side is off the table here, and what to choose instead.
The quick answer: they're very different pets. A hamster is small, solitary, nocturnal, shorter-lived and best for older kids/adults who'll respect its sleep; a guinea pig is larger, highly social (needs a companion), awake in the day, longer-lived and generally more interactive and gentle. Neither is "easy" — both need proper space and care — but guinea pigs suit families wanting daytime interaction, while hamsters suit smaller spaces and hands-off admirers.
⚠️ First, the New Zealand reality: you cannot legally get a hamster here. Hamsters are not an approved import species. MPI allows only rabbits and guinea pigs (from Australia) and chinchillas (from Great Britain) to be brought in as pet rodents and lagomorphs, and states plainly that hamsters, gerbils, mice and rats cannot be brought into New Zealand. There is no lawful domestic source either — New Zealand has no established pet hamster population — so a hamster offered for sale here would not have a lawful origin. This page is kept because "what about hamsters?" is one of the most-asked NZ small-pet questions, and for readers keeping hamsters overseas. If you are choosing a small pet in New Zealand, start with Exotic Pets Banned in NZ and the legal options in Small Pets and Exotics NZ. The rules, the reasons and the legal alternatives are set out in full in Are hamsters legal in NZ?.
Quick comparison
| Hamster | Guinea Pig | |
|---|---|---|
| Company | Solitary (Syrians must live alone) | Social — needs at least one companion |
| Active when | Night (crepuscular/nocturnal) | Daytime — interacts with you |
| Lifespan | ~2–3 years | ~5–7 years |
| Handling | Can be nippy if woken; quick | Gentler, but needs careful two-hand support |
| Space | Large enclosure, deep bedding to burrow | Lots of ground-level floor space, for a pair |
| Diet | Omnivore mix | Herbivore — unlimited hay + daily vitamin C |
| Best for | Smaller homes, older kids, hands-off | Families wanting daytime, interactive pets |
Why the hamster side is not an option in New Zealand
Overseas, a hamster suits people with limited space who want a single, evening-active pet. In New Zealand that choice does not exist: hamsters are not an approved import species and there is no lawful domestic source, so the honest answer to "hamster or guinea pig?" here is that only one of them is actually available to you. The species detail is still worth knowing — see how to set up a hamster cage if you are researching hamsters or keeping one overseas — but it is not a NZ purchasing decision.
If what appealed to you about a hamster was the small footprint and the hands-off, evening-active rhythm, the closest legal NZ options are a pair of fancy rats (social, clever, more interactive than a hamster) or a chinchilla (crepuscular, needs cool dry housing and a dust bath).
Choose a guinea pig if…
You want a daytime, interactive, gentle pet and can provide company (two or more), lots of floor space, and a hay-based diet with daily vitamin C. Guinea pigs are social and shouldn't live alone — see do guinea pigs need a companion in NZ and how to set up a guinea pig cage in NZ.
Either way
Both are a real commitment with vet costs, daily care and proper housing — not "starter" throwaways. Match the pet to your space, your routine, and how much interaction you want — and check it is legal to keep here before you get attached to the idea.
Quick takeaways
- Hamster: not legal to keep in NZ — solitary, nocturnal, ~2–3 yrs where it is legal.
- Guinea pig: social (needs a friend), daytime, ~5–7 yrs, more interactive.
- In NZ the practical comparison is guinea pig vs fancy rat vs chinchilla, not hamster.
- Guinea pigs need company, floor space, hay and daily vitamin C.
- Neither is low-effort — match the pet to your routine and space.
Shop related categories at PetMall
Looking for enclosures, bedding and accessories for either in New Zealand? Browse the PetMall small pet range for current options and nationwide delivery.
Related reading
References
- MPI, Bringing pets to NZ (other than cats and dogs) — only rabbits and guinea pigs from Australia and chinchillas from Great Britain may be imported; hamsters, gerbils, mice and rats cannot be brought into New Zealand, checked 2026-07-29: https://www.mpi.govt.nz/bring-send-to-nz/pets-travelling-to-nz/bringing-pets-to-nz-other-than-cats-and-dogs
- Merck Veterinary Manual, Guinea Pigs — guinea pigs are social; keeping two together markedly reduces the effect of environmental stress, and females or males raised together generally live peacefully, checked 2026-07-24: https://www.merckvetmanual.com/exotic-and-laboratory-animals/rodents/guinea-pigs
- Merck Veterinary Manual, Providing a Home for a Hamster — housing, bedding and the solitary nature of most pet hamsters, checked 2026-07-24: https://www.merckvetmanual.com/all-other-pets/hamsters/providing-a-home-for-a-hamster
Important notice
*General information for NZ owners. Both species can hide illness — see a small-animal-savvy NZ vet for any health concerns.*
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