That depends somewhat on your attitude towards baby mice.
You can, but they will most likely fight, an probebly mate.
Get a female mouse and male mouse, keep them in the same cage, they are likely to mate or breed if they're alone together.
A female mouse is called a doe. (and a male mouse is called buck) newborns are pinkies
"They will mate but if you keep them in there at the birth then the female will kill the male."
Well, maybe it'll make a merbil?
its sad but yes...
You can keep a female and male hamster together, but you must consider where you would home the babies if she has them.
Yes. Generally it is best to keep an adult male mouse by itself because if he is with another male they will fight over territory (sometimes to death) and if he is with a female he will breed with her and you probably don't want babies. I would not recommend keeping female mice alone because there is no reason they can't have a friend. A couple females together will keep each other company... this will keep your mice happy and healthy.
You can not keep Betta splendens males together without them trying to kill one another. You can only keep a male and female Betta s. together while they are courting and spawning. Afterwards he will kill her if she is not removed. You can keep male or female Bettas with most other species of fish with no problems.
First you select a male for your female; or female for your male. Put them in a room together, but if the female is aggressive or the male is it's best not to. When they want, they will breed and keep repeating until the female is pregnant.
...not if that companion happens to be a cat. Mice are not terribly social animals but keeping two together will keep them more active. An active mouse is a happy mouse. Keep an eye on them when you first introduce them because either one or the other may feel threatened and attack the other. If you put a male and female together, she will soon have pups--and will become protective and may attack the male.
Yes. Don't keep males and females together.