They should live 2 or more. But male mice can't live together always. If you see your male mice fight or beep you should split them. Also i don't recommend to have more then 10 females together.
mice live in fields, your basement, outside, pet stores and also borrows
As pets no. It is not a good idea to keep these two species together. They can compete for the same things and fight.
You will end up with inbred mice
Sure. It should eat live mice very well.
In cages.
Mice usually live for about 1.5 to 3 years.
Mice is already plural. e.g. One mouse, two mice, and three blind mice!Mouse has an irregular plural, mice.
I don't really care
On average, mice live to be about 1-3 years old. However, some can live up to approximately 4 years with proper care and a healthy environment.
No they'll kill each other
symbiosis