I know there are a few species of tree frogs indigenous to Wisconsin, but this one has me boggled. I don't have pics yet, since I just found him, but he was sitting quietly on a pipe in the bathroom at work. I almost didn't see him at first, since he's pure gray/silver. When I picked him up, I found yellow legs and part of his belly is yellow as well. it has no distinguishable markings to establish whether or not he is a gray tree frog. What do you guys think? I have lots of reptile experience, but no experience with frogs. I'll need some care info, as it is nearing winter here, and even the frogs in my pond at home have "flown the coop" by now. I'll keep him inside the garage or basement for the winter and brumate him if it is suggested I do so... otherwise, tell me what I have here so I can get the right info. Thanks much.

