I can has frog?

Um. So I was pulling the plants out of boxes and taking the plastic sleeves off them and attaching price tags and whatnot, and after a few hours of this, I look down in the box of asparagus ferns I've been unpacking and see this guy.

(It's somewhat alarming, by the way, to look down into a box of plants and see movement. Just in case you'd ever wondered.)

There's no point in leaving him in the greenhouse, because the pesticides would get him. I couldn't bring myself to do that. Mercy killing was out of the question also -- that's never gone well for me either. So I caught him and brought him home, and now I have no idea what to do. We gave him a shot glass full of water and a few fragments of roast beef (the theory being that frogs are carnivorous, even if they don't normally kill and consume cattle -- though what a PBS nature special that would be), and a plant for oxygen, but this leaves a lot of questions open, obviously.

I suspect he's probably doomed regardless of what I do. But I'm willing to try to meet him halfway. Anybody want to make any wild stabs in the dark on this one?

UPDATE: I'm reasonably sure that what I have is a Hyla cinerea, or green tree frog. As it happens, they're a popular species of pet frog, and they're even the state amphibian for two states (LA and GA). The down side is that they are said to need a lot of space: the articles I ran into on-line all seem to agree that a ten-gallon is the absolute minimum possible, plus there's advice about non-chlorinated water and sterilizing terrarium materials in bleach-and-water solutions before adding them to the terrarium, and there's all this stuff about crickets, and . . . well, and I need another thing to take care of like I need another piece of caucus-related campaign literature, so something is going to have to be done. I just have no idea what one does with excess frogs. Pet stores? Animal shelter? Still trolling for suggestions, here. . . .

Oh, and -- they don't eat roast beef, but then we kind of suspected that.

UPDATE: The story concludes here.