I was going to say 3-toe too, but it has 4 toes on the back foot. It's a bit young to have a pattern showing yet on the carapace, but if the plastron is dark all over, it may be an eastern, and yes, deformed. (3-toe has a bone-colored plastron, no other color, eastern has an almost over all black colored plastron and the gulf coasts have a splotchy black plastron)
It's definitely a male. You can tell by the large back legs and the reddish color of the eyes. The tail's pretty long too.