They also have an exo skeleton,which is awesome. Im gonna try to find my pic of a skeleton I found.
I caught it with my hand for a photo opp, Then released. As I understand yes they are native to the Amazon,but years ago they were released here in Florida to regulate some kind of vegitation. Now, as I have observed they are in the river systems,ponds,& lakes. They have eyelids & when you see them resting by the bank, they are often sleeping so I just grab em, Take a pic,then release. I hope this clears up the confusion. ;o)