You’ve got a guinea pig and a rabbit, and you’re thinking about putting them in the same enclosure. It sounds like a space saver that gives them both a friend.
Don’t do it, and here’s why.
About These Two Species
Rabbits
There are 29 species of rabbits living around the world in different environments. They’re social creatures that live in colonies.
Pygmy rabbits are only 9.3 inches long and weigh less than a pound, while larger rabbits grow to 20 inches and weigh over 10 lbs. Wild rabbits make their homes in diverse temperature extremes, but domestic rabbits need regulated conditions to protect them from heat exhaustion or hypothermia.
In the wild, rabbits are prey animals. Owls, hawks, eagles, falcons, and many other predators are a constant threat.
Their evolutionary adaptations let them run at high speeds for long periods to escape danger.
Guinea Pigs
Domestic guinea pigs are fairly large for pocket pets. They weigh between 1 to 3 pounds and have a body between 8 to 16 inches long.
Guinea pigs are native to the Andes Mountains grasslands and lower slopes of South America. Just like rabbits, guinea pigs are very social.
In the wild, they lived in groups and colonies.
What Are the Similarities Between Rabbits and Guinea Pigs?
Both species are herbivores with plant-based diets. That’s about where the similarity ends, though.
Guinea pigs can’t eat rabbit food.
Rabbits mainly eat grasses, clover, and some cruciferous plants like broccoli and Brussels sprouts. Guinea pig dietary needs are quite different.
Guinea pigs eat hay plus some raw fruits and vegetables, though not all fruits and vegetables safe for humans are safe for guinea pigs.
Neither species eats meat or cooked food.
They’re both crepuscular animals, meaning dusk and dawn are their busiest times. Low light helps them stay hidden from predators.
If you’re curious about guinea pig activity patterns, check out our guide on whether guinea pigs are nocturnal.
Both species crave social interaction. But they want their own kind, not each other.
If you want a companion for your rabbit, keep them in neutered pairs or small groups. Guinea pigs do best in small groups too, ideally one neutered male with a few females.
Even if they seem to get along, keeping them together in the same enclosure causes problems because there are simply too many differences between them.
Do Rabbits and Guinea Pigs Get Along?
Usually, guinea pigs and rabbits don’t get along, though they may tolerate each other. We covered this topic in a separate article.
You shouldn’t try to keep rabbits and guinea pigs together because rabbits can easily hurt guinea pigs and even break their backs.
Why Guinea Pigs and Rabbits Shouldn’t Live Together
There are several serious reasons why these two species shouldn’t share an enclosure.
Different Communication Skills
These two species literally can’t talk to each other. Their communication methods are completely different.
A guinea pig speaks a different language than a rabbit, and neither can learn the other’s signals. This gap causes confusion and conflict.
Different Sizes
Rabbits are much bigger than guinea pigs, which intimidates the smaller animal and encourages bullying. When they try to play together, a rabbit can easily hurt a guinea pig and cause serious injury with its powerful legs.
Different Nutritional Needs
Despite both being herbivores, these two species have different dietary requirements. Guinea pig food should contain vitamin C, which is essential because guinea pigs can’t produce it on their own.
They need daily vitamin C through fresh fruits, vegetables, and supplements. Rabbits can synthesize vitamin C on their own.
If a rabbit eats guinea pig food fortified with vitamin C, it may suffer kidney damage.
Rabbits need all vitamins except vitamin C, so rabbit food isn’t nutritious enough for a guinea pig.
The Danger of Diseases
This one is the deal-breaker. Rabbits carry Bordetella bronchiseptica and Pasteurella bacteria without showing any symptoms at all.
Those same bacteria cause serious, often fatal respiratory disease in guinea pigs. A healthy-looking rabbit can silently pass a death sentence to a guinea pig.
Space Requirements
Rabbits are much larger and need more space. A rabbit can’t fit comfortably in a guinea pig cage, and keeping a guinea pig in a rabbit’s cage alongside a rabbit isn’t safe either.
A rabbit can hurt a guinea pig by attempting to mate, potentially breaking the guinea pig’s back. Rabbits also jump and kick with powerful hind legs, which can injure small guinea pigs.
Both species need safe environments designed for their specific needs. In the wild, both guinea pigs and rabbits live in groups because groups offer safety and companionship.
Our domestic pets have those same instincts.
Kept alone, both rabbits and guinea pigs can become sad and depressed. A lonely piggy or bunny may develop health problems from the stress.
Having at least one neutered companion of the same species does wonders for your pet’s mental health. If you currently own just one guinea pig or rabbit, consider getting a friend of the same species and introducing them slowly.
Final Thoughts
Rabbits and guinea pigs should never share an enclosure, no matter how much space you have. The risks of disease, injury, and nutritional problems are simply too serious.
Both animals are social and need companionship, but they’re happiest with their own kind. Get your guinea pig a guinea pig friend, and your rabbit a rabbit friend.
That’s the safest and kindest setup for everyone involved.
Frequently Asked Questions
Even supervised playtime carries risks because a rabbit can accidentally injure a guinea pig in seconds with a kick or jump. The size and strength difference makes safe interaction nearly impossible to guarantee. It's better to let each animal socialize with its own species instead.
Rabbits commonly carry Bordetella bronchiseptica and Pasteurella bacteria without showing any symptoms at all. These bacteria cause severe and often fatal respiratory infections in guinea pigs. Even brief contact between the two species can be enough to transmit these dangerous pathogens to your piggy.
Keeping separate cages in the same room is generally safe as long as the animals can't touch each other. Airborne Bordetella transmission is possible but unlikely with distance between cages. Make sure each cage meets the space needs for its species and includes hiding spots.
Another guinea pig is always the best companion for a lonely piggy. A neutered male paired with a female or two females together tend to be the most harmonious pairings. Introduce them gradually on neutral ground for the best chance of forming a strong bond.
