Garm

Garm (ガルム) is a green dog enemy from Mega Man Zero that runs at ZeroXorZ and grabs him, leaping away after biting him several times. It appears to be based on the mythological Garmr hound.

Snow Garm
Snow Garm (スノーガルム) is a white colored Garm from Mega Man Zero 2 that appears in Fairy Leviathan's stages. It acts in the same way as the normal Garm.

Other media
Two Garms appear pursuing a Resistance member in the Rockman Zero manga.