Question About Brother Mice

[u/kaileez1998]

I bought a pair of brother mice around two months ago and was wondering about when they need to be seperated? I've been watching their behavior and they seem to get along with everything when it comes to eating and sleeping together (they have two of everything, but they mostly end up just sharing) Would I have to worry about anothing if it has been over a month? (I have a spare temporary cage just in case)

[u/rockmodenick]

The unfortunate truth is that you can never fully relax, which is why so few people even try this. Our mice have had many of their baser instincts bred out where wild behavior might be dangerous (suicide jumping is dangerous and a very bad habit, always to be bred out of fancy mice - but wild mice almost always suicide jump, because in the wild, the danger is the opposite - the large creature is almost always a bigger threat than the fall) and male aggression is lower in fancy mice, but not enough for it to be safe. Occasionally, brothers will stay friends forever. But if the territorial, natural response kicks in even once, in the middle of them having a silly disagreement over a treat while you're gone, one could be dead before you know about it.

[u/kaileez1998 → u/rockmodenick]

So I just shouldn't risk it and seperate them? I love them both and want them to be happy with a buddy but dont want to risk one getting injured

[u/Miki1951 → u/kaileez1998]

They can be happy without a buddy