Hellhound

Hellhound is an enemy from the Castlevania series. It is a demonic dog that can breath fire. In Castlevania: Bloodlines, it appears as a sub-boss in the first stage. It attacks by breathing flames (as mentioned) or making a great howl causing glass to shatter and damage the player. After it is hit enough times, it's corpse will remain on the ground and squelch. The player must then hit it one more time to completely destroy it.