#30 Don’t count on a tree stopping them.
http://voices.nationalgeographic.com/2014/02/13/beware-in-the-bayou-gators-and-crocs-can-climb/
I’ve seen them on branches and trees that overhang the Suwannee and Santa Fe rivers, but I’ ve never seen one climb straight up a tree. They can, however climb over a chain link fence. Pretty quickly BTW.