Hello and welcome! Gray Treefrogs are a very nice frog to have as a pet. They are very hardy and are voracious feeders. They will usually eat most insects you put in their enclosure, and love to chase and catch moths, flies, small spiders, cockroaches, and small worms. I don't usually have them as pets, but a couple of the guys here know a good deal about them. They should be able to give you more info on them. Good luck!