What is the difference between a toad cub and a frog cub?

The difference between frog tadpoles and toad tadpoles is that frog tadpoles are lighter in color, while toad tadpoles are black. Frog tadpole's mouth is at the front end of the head, toad tadpole's mouth is down, close to the stomach; Frog tadpoles have round bodies and long tails, while toad tadpoles have oval bodies and short tails. If you master these three points, it will be easy to distinguish them.