My boyfriend bought a bulllfrog tadpole( at least I think it's one) recently. It's large and a bright green colour. ANYWAY, I've never seen a metamorphosis start to finish, and I notice the tadpole is looking a little baggy. There's a little hole in the baggy skin near his front, which i'm assumin is where his front legs will come from, but...he doesn't even have back legs yet. Is that normal?

Edit: I found this photo on google
He looks kind of like this just not as pudgey in the belly