Are there any evil dog gods in folklore?

Question

I know there are dog gods like the Inugami but are there any evil dog gods? By this I mean a god that is clearly evil but still represented as a dog. Cerberus would fit the bil if it where a god and evil. That is the direction I am going for

Answer 1

Set

is a possibility, if you're,willing to stretch the meaning of "dog" a bit.

Set is one of the oldest gods in Egyptian mythology. He is usually represented by a mythical sha or "Set-animal" 𓃩 which appears to be some sort of canid in general, combined with some other supernatural characteristics. As time passed, Set himself had an anthropomorphic form with the head of a sha.

One problem with this relates to the "evilness" of Set. Although the Osiris myth where Set murders and mutilates Osiris dates from the 24th Century BCE, Set was also a protector of Ra from the chaos god Apep. Some Pharaohs such as the 19th Dynasty Seti I and II chose Set-based names instead of Horus or Amun-based ones.

Set didn't really become an "evil" deity until the 11th century BCE and onwards, when Egypt was conquered by the Nubians, Assryians, and Persians.

Answer 2

The closest one (it's not really a god) that comes to my mind is the Norse hellhound Garmr, who is given a mostly evil connotation (he's described as howling and blood-stained, and is associated with the coming of Ragnarok).

Also, in his article The Hellhound, Bruce Lincoln describes a widespread Indo-European motif of two otherworldly dogs: a "white dog of life" and a "black dog of death", of which clearly the latter seems to be characterized as evil, or at least menacing. If you are interested, I recommend you take a look at the article, as he provides many references on otherworldly dogs in Indo-European myth and folklore.