:
Welcome to kingsnake.com's message board system. Here you may share and discuss information with others about your favorite reptile and amphibian related topics such as care and feeding, caging requirements, permits and licenses, and more. Launched in 1997, the kingsnake.com message board system is one of the oldest and largest systems on the internet.
:
.
Don't use size as an indicator, because it's not very accurate... will only provide a general guideline.
If it vocalizes, as mentioned, it's a male. Males tend to have more folds in the skin under their neck and more yellow or green color, but you need to compare it to other frogs to really be able to tell. It's not hard once you get the hang of it, though 
-----
Got hips like Cinderella / Must be having a good shame / Talking sweet about nothing / Cookie I think you're Tame 
Help, tips & resources quick links
Manage your user and advertising accounts
Advertising and services purchase quick links