This is an adult Argentine Horned Frog (Ceratophrys ornata) and they are native to most of South America. They are also known as; South American Horned Frog, Argentine Wide-mouthed Frog, Argentine "Pac Man" Horned Frog, Ornate Horned Frog, Ornate Pacman Frog, Pacman Frog, Bell's Horned Frog, Escuerzo (toad in Spanish). They are voracious eaters, and will attempt to swallow anything that moves close to their mouth, such as insects, small rodents, lizards, snakes, or other frogs.
Firebelly Toad (Bombina orientalis) is a semiaquatic frog found in Korea, China, and Russia. They are usually a bright green with black mottling on their upper body parts. However, they can change their color to brown and even black depending on their background. Their underside is bright yellow to red mottled with dark brown to black. They are commonly called a toad because of the tubercles on its back, but it is actually a frog. They are also known as; Oriental fire-bellied toad, Oriental firebelly toad, Eastern fire-bellied toad, Tuti Toad, Oriental Bell Toad, チョウセンスズガエル (Japanese), 무당개구리 (Korean), Kumak dalekowschodni (Polish), Sapillo de vientre de fuego oriental (Spanish). They can secrete a milky-like toxic substance that is not dangerous to people unless ingested.