Garm

Garm (ガルム) is a green dog enemy from Mega Man Zero that runs at Zero and grabs him, leaping away after biting him several times. It appears to be based on the mythological Garmr hound. They only appear in the first half of the Neo Arcadia Shrine.

Snow Garm
Snow Garm (スノーガルム) is a white variant of 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.