From Wikipedia - Psoglav (Serbian: Псоглави, literally doghead) is a demonic mythical creature in Serbian mythology; belief about it existed in parts of Bosnia and Montenegro. Psoglav was described as having a human body with horse legs, and dog's head with iron teeth and a single eye on the forehead.
Psoglavs were described to live in caves or in a dark land which has plenty of gemstones, but no sun. They practice anthropophagy, by eating people, or even digging out corpses from graves to eat them. In the Croatian language, the term is Psoglavac. There are numerous legends about them, particularly on the Istrian peninsula in Croatia.