Zoophagous

zoo-pha-gous (zō-ŏfˈə-gəs)

adjective
1. Feeding on animal matter.
Can it be that his instinct is satisfied as to the vampire's ultimate triumph? Stay. He is himself zoophagous, and in his wild ravings outside the chapel door of the deserted house he always spoke of 'master'.* - Dracula

Synonyms: cannibal, carnivorous, flesh-eating, predatory, rapacious.

* A description of Renfield.
** We gotta have animal fat.