There is a monster in the Marsh of Oblivion called the Toxic Toad. It is a smaller, weaker variation of the Decoys.
Decoys have only a few attacks. One is where it will shoot its tongue out in front of it, damaging players a few times if caught. Another is where it lunges forward, body slamming those in its path.
When dead, Decoys will erupt in a green gas explosion, damaging players caught nearby. This, however, does not apply to Toxic Toads.