WE CAUGHT A FROG!!! How do we keep it alive??

[UncleChester]

Okay people, okay. I said it doesn't really matter because it'll die eventually anyways, no matter how long we manage to keep it alive. Even if we could put him back in the wild, you can't guarantee that he would have a longer, happier life.

No, but you could guarantee that he wouldn't be killed due to improper care. Death by natural causes (ex. becoming snake food) is generally more accepted than a death caused by human intervention.

And for the record, we do care about him. We just don't know HOW to care for him. We've tried all sorts of food for him and we can't find something he likes! Crickets are too big for him (tried chopping some up too). Ants don't work. Frog pellet food things don't work. He wouldn't eat the small flies I managed to catch. But my dad thinks it did eat a mosquito he put in. We're gonna try the really gross worm things next!

He's a predator, not a scavenger, so don't bother with anything dead or not moving. If he's really tiny you need a steady supply of fruit flies and/or pinhead crickets as Cheri mentioned. Have you read the care article I linked to yet? It deals with all life stages of Gray treefrogs and can be applied to your dude.