I think quite a few fetishes are odd. Pissing on people, having someone stand on your nuts with heels, being tied up and sodomized with a bull whip, etc. I love my dog like he's a member of the family. If he was a she I wouldn't milk her and pound a glass of dog teet joose.
why so grossed out? If you drink cows milk from a dirty cow, isn't that really the same thing, but at least your getting the milk from your own species?