They are wild caught. The two larger ones were part of a pack of 6 that we found in a greenhouse a couple of years ago that we were cleaning out so we could sterilize and paint its interior over the winter. We'd been punting treefrogs out of the greenhouse all fall in light of the upcoming clean, but they are pretty determined to return with lots of ways back in. We found 6 after it was too late to put outside (snow on the ground too late), so I took them in over the winter (these were my first frogs). I released 4 in the spring but couldn't manage to part with Fatty and Waldo. Tyr was a wild "sympathy" catch, one of his front limbs didn't develop properly and we figured he'd be snake bait in no time. I'd normally let nature take its course but my girlfriend wouldn't let me.

The American green came from a petstore, they said they didn't know if it was WC or not, so I've just assumed it was.