The space between the genitals
If you know your rodents, you should be able to tell the gender of baby rodents at birth (I can).
Mice is not a gender.
Usually not. With most mice, people w/ no mouuse expireince can tell if its a boy or girl. Boys have big butts and you can usually tell gender a couple weeks after birth.
Mice are too small for you to tell their gender when they are only two weeks old. When they get a little older, you can look under their tails for signs. Males will have two distinct openings, with a bit of space between them. Females have what looks more like one long opening, but is actually two openings that are very close together.
the gender is a guy you can tell
if they're breathing
mice or rat
No. The gender is not related to the relationship of the parents.
Your parents
If that gender turns you on
You can tell by their size and color.
You can tell the gender of a cat by looking at its genitalia. Male cats have a penis and testicles, while female cats have a vulva.