You have to look at head shape, unless you get lucky and have a male evert a hemipene. Males will typically have broader heads than females. In southerns, you don't start to see a noticable difference until the lizards are over two years of age. In my breeder pair of madreans, I can't see any discernable difference.

See below for a pair of southerns.

[ Reply To This Message ] [ Subscribe to this Thread ] [ Hide Replies ]