With their large mouth and abdomen and their desire to gobble up everything in their path, it's not hard to understand how the Pacman frog got its common name.

Horned frogs are named so because of the large fleshy points above their eyes that resemble small horns.

Ceratophrys is a genus of frogs in the family Leptodactylidae, subfamily Ceratophryinae. They are also known as South American horned frogs from the rain forests of Argentina, Uruguay and Brazil.  Ornate horned frogs are usually marked in bright green, brownish red, and yellow blotches and spots.  - Wikipedia -