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Mice Companions — Male Versus Female

Is it better to keep mice together in a community or separate?

By Carol Lawton
Posted: October 15, 2008, 8:00p.m. EDT

Q: I got two mice because I heard that they can get lonely, but what should I do if they express aggression toward each other? If I have to separate them because they are violent, then what’s the point of having two?

A: If your mice are not getting along, put them in separate cages immediately. Their safety and well-being are far more important than having a companion.

As a rule, mice are very social animals and can get lonely, especially females. I recommend that you keep two or more females together at all times. Female mice thrive on social interaction and established groups often welcome new members after a carefully monitored introduction. My groups of females usually have between four and eight members and it's rare that they have any social problems.

However, I suspect you have male mice and they are a different story. Male mice are frequently territorial, and it is very unusual for them to live happily with a male companion. A female companion isn't an option because of breeding concerns, so I recommend housing male mice alone. They live very comfortably like this and make use of any toys, houses or other enrichment you might add to their home. With a little extra attention from their human, male mice can have a rich and full life even though they live alone.

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Pretty good :)
Asa, Wisconsin, WI
Posted: 4/28/2010 7:33:52 PM
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