Quote Originally Posted by Brhino View Post
The frog has no ridges, you are correct. It does look rather like a bullfrog, except that most photos I see of bullfrogs they have green heads. This one is brown all the way over. It also seems like this one has a more pointed snout than a bullfrog. If they are bullfrogs then that explains why they're taking so long to change, I guess.
They can be fairly dark as well, American Bullfrog - Rana catesbeiana | Matthew Graham

or search for bullfrog on google images to see a wide variation in their colours (though there are a few misidentified ones in here) https://www.google.com/search?num=10....1.veBXal82Pnc It's pretty amazing the variety you can get within a single species.

The North American assumption is probably pretty safe. I think most of these 'kits' from online dealers probably just collect tadpoles from the wild and likely won't be shipping live animals across borders.

Tadpoles are almost always tricky, but can be helpful for the ID. Leopard frogs usually breed in the spring, but at that time last years bullfrog tadpoles will be touring around, so it wouldn't be shocking if these were collected from the wild and misidentified. Pretty poor on their part, a bullfrog is more demanding food wise than a leopard frog so people will be even less prepared. I don't agree with these sort of outfits anyways, but they could at least be responsible and accurate.