From Lovecraft:

“These figures were seldom completely human, but often approached humanity in varying degree. Most of the bodies, while roughly bipedal, had a forward slumping, and a vaguely canine cast. The texture of the majority was a kind of unpleasant rubberiness.” (“Pickman’s Model”)

“It was a colossal and nameless blasphemy with glaring red eyes, and it held in bony claws a thing that had been a man, gnawing at the head as a child nibbles at a stick of candy. Its position was a kind of crouch, and as one looked one felt that at any moment it might drop its present prey and seek a juicier morsel. But damn it all, it wasn’t even the fiendish subject that made it such an immortal fountain-head of all panic—not that, nor the dog face with its pointed ears, bloodshot eyes, flat nose, and drooling lips. It wasn’t the scaly claws nor the mould-caked body nor the half-hooved feet—none of these, though any one of them might well have driven an excitable man to madness.” (“Pickman’s Model”)

One in five million have soul magic. One in five hundred thousand have heart magic. Mind magic, body magic, & void are possible. Faith is not uncommon.

Harvest magic or faith can harm them.