[Cait]

Most breeds of mice can be separated at 21 days old.

I would just like to add that although they 'can' perhaps survive from this age onwards, it's NOT a good idea to remove them if you want strong healthy adults. I usually separate at 4.5 weeks old and wouldn't recommend anyone to separate before 4 weeks - there should never be a situation where this is necessary.

 

[Cait]

Not quite sure where the last bit was aimed? :?: :? I for one do not breed 'easy' varieties so I'm not sure what you're getting at... My comments were purely based on experience of what gives the best results for the mice.