Would a mouse be a good companion for my rat?

I have heard of mice making good companions for rats, but I would be careful. Rats have a tendency to be territorial, and I would worry that the size difference would make it difficult for a mouse to defend itself. Your rat might seriously injure or kill the mouse. Just something to think about. It’s one of those things: I’ve heard of rats and cats getting along, but I would be wary to try it.

8 Responses to “Would a mouse be a good companion for my rat?”


  1. 1 sarah

    no,even though they look alike they do not get along

  2. 2 sarah.k

    No, even though they look simaliar they do not get along therefor, should be kept seperate.

  3. 3 sarah

    no, i currently have a rat.. who just recently killed our 6 week mouse… i suggest not to keep them together…

  4. 4 Sherry

    My rats (roxie & molly) get along great with my 5 year old female german shepard. Go figure. They play chase the dog so much I wouldn’t put them with something smaller like a mouse.

  5. 5 Lori

    I’ve recently seen rats in a home running around with cats. They love playing together. The owner told me that if the cat gets out of hand, the rat bites them. This quickly puts the cat back in line!

  6. 6 Cait

    My dog and three female rats get along excellently… the girls and my male mouse, not so much. The rats try to play with him, nibble, groom, et cetera like they do to each other, but are unaware of their strength. Billy the mouse in turn, feels intimidated and bites. When I first tried to introduce them, he actually bit Dolly’s foot, drawing blood! I’m sure there are exceptions to this, but I would be extremely wary.

  7. 7 Dawn

    I have personally had excellent luck with mice and rats together if they are introduced young. I’ve had several successful mice buddies who lived with the rats over the years. But there is one that I will never forget.

    My last mouse Flurfy and a baby rat Nina were raised together from the time Nina was weaned. As Nina grew and had her first litter, Flurfy became the nursery maid. Although he was a male he tended to the babies as any loving parent would. Through the next two years of litters all the freshly weaned babies got the love and affection of nurse maid Flurfy.

    When Flurfy started showing signs of arthritis I was worried the big playful babies would hurt the old man and I separated them. He fell ill within a week of we lost him. I still believe he died of a broken heart. I guess no one ever told Flurfy he wasn’t a momma rat.

    I wouldn’t suggest anyone try it for the heck of it but wanted to share my success story.

  8. 8 Amanda

    NO! lol that would not be a good idea at all, rats are omnivores not herbevores so they eat meat and allthough rats are genrally scavengers they would quite likely squash or possibly even intentianaly kill a mouse and then eat it, it has been known to happen.

    rats and mice are both great pets but if you want both keep them seperate, they wont be bothered by the others presence in the same room the way most rabbits and dogs would be.

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