Frostgrave - Leechwolves

With the size, speed, and nimbleness of a wolf, but the fleshy body and blood-sucking head of a leech, these demonic predators commonly appear when summoning magic goes wrong. Originating in one of the closer planes of existence to Frostgrave, it is said that they can smell (or possibly taste…) their prey across the dimensions. Apart from their aggressiveness and pack-hunter tactics, the biggest problem with leechwolves is getting one off once it has a grip with its blood-sucking maw.