Chupacabra, a canine-class monster that is vampiric, with some sort of draining bite. In a reference to how some real-life sightings of it have turned out to be mangy canids, it may appear at first as a coyote.

There should be some additional types of wolves (white wolf, black wolf, giant wolf, direwolf, maned wolf, etc) added to flesh out the canine monster class, mainly because in Druid games so many regular wolves will generate that they go extinct and random monsters start generating instead, which hurts the flavor of places in the game designed for wolves.

Throwing a treat at most non-domestic d or f will make them devour it, and will often pacify them and occasionally tame them.

Most d and f monsters can be pacified, but not tamed, by throwing appropriate food at them (they will eat it, so you can’t reuse the same food item).

Variants that give Geryon a lair should implement his two-headed dog Orthus.