I raised two frogs from tadpoles this year and it was amazing to watch! One of them was an American Bullfrog, and it took her almost two weeks before she would eat. I would wait a few more days and then offer it again. Eventually, you'll notice them missing and poop and all will be good. Bullfrogs, I've noticed, are pretty tough and stubborn, and will do things on their own schedule. I think they rather enjoy seeing us panic, we of oh so little faith in Mother Nature!!Best of luck and I hope your little one grows up big and strong.