How do you tell if a red backed salamander is a boy or a girl?

well if u go under the tail when its breeding time youll see swelling aroud the area where it pees and poops that's a male. now this is a female if her tail is shorter than the other one she a female or if u cant tell theres a diffrents with the belly hers is a big belly.

well if u go under the tail when its breeding time youll see swelling aroud the area where it pees and poops that's a male. now this is a female if her tail is shorter than the other one she a female or if u cant tell theres a diffrents with the belly hers is a big belly.