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Often guinea pigs are housed with rabbits, especially at pet stores.
It is a common practice, but the advice from most expert sources is - DON'T DO IT!
If kept outdoors, they are often considered as company for each other, as the guinea pig can get warmth from the larger rabbit, but a rabbit has very powerful back legs which often does great harm to the more fragile guinea pig!
Also, they are different species, and in general terms should not be kept together, their dietary requirements differ.
Jalene Minkevics wrote to say that it is a little known fact about Rabbits and Guinea Pigs and why you should never, ever, ever house them together. This is a lesson she learned the hard way with a $300.00 vet bill for her $35 guinea pig. Rabbits can be carriers of a bacteria called Bordetella which does not cause any illness in the rabbit but causes pneumonia in guinea pigs. Although not all rabbits carry this bacteria, most do and therefore should you wish to keep your guinea pig and save yourself several hundred dollars do not house them together.
Rabbits will burrow, and if placed on grass outdoors will soon escape by burrowing under the hutch. Guinea pigs do not have this burrowing instinct, but will be quite happy to use any tunnel provided by an obliging bunny!
I agree, it is tricky. I used to feed guinea pig food (dried mix) to both, and give Molly her greens separately and give Mitzi the bunny her much smaller share afterwardsstripypig said:The main thing that concerns me with bunnies and pigs (I have both, but they live separately), is diet.
Buns and pigs need different things, pigs for example need more Vit C than buns, and a lack can cause temporary paralysis of the back legs, equally buns have very sensitive tummies and often can't eat the same amount of fresh veg as a pig can.