breeding mice problem

[L.West]

I have been breeding my own mice lately. Once they are weaned I try to keep several (maybe 6 small males) together in a 10 gallon tank to wait to be fed off. What I am finding is that some of the mice have clearly been being picked on - they have bite wounds on their butts.

Why is this happening - is it something I am doing wrong or is it to be expected. Is my only option to separate them??

If someone could chime in on a possible solution that would be great.

Thank you.

[CCfive]

Male mice can be extremely territorial, I've had some chase others around and almost kill them. You just have to identify the aggressor and remove him/them.

[mastaxaph]

That man is correct. I know your pain in a se.se I put two soon to be dinners together and one kept bullying the other seperated them and the one that was being picked/humped to death is now a breeder for me. Caught him doing.g the nasty the other day. I'm proud of him now.

[RichsBallPythons]

If male mice are housed together when young shouldnt have a problem at all when given proper food and water.

If their near females and can smell them they will fight. I have a tub with about 40 adult males and none fight at all...

[mastaxaph]

I think that's called..magic.

[Rhasputin]

Don't house male mice together. After 6-8 weeks they'll start fighting, unless they're been brought up in a strict colony setting. And even then you can have problem mice.