Bog Creature (Diablo II)

Like Swamp Dwellers and Slime Princes, Bog Creatures are Frog Demons which live in the jungles of Kehjistan. This amphibian beast can be encountered usually near creeks, where it emerges and might take a careless hero by surprise. Bog Creature has a harmless melee attack. However it shoots much more effective fire balls from distance that have a knockback effect.

In Hell difficulty they are immune to cold.

Swamp DwellerBog CreatureSlime Prince