Hi, wondering if anyone can advise on this? Our kelpie was in a bad dogfight and required surgery about 6 weeks ago. The vet had to shave big patches of fur on her face and the back and sides of her neck to deal with bite wounds. There's no sign of any regrowth on her neck, but the facial hair has already come back. I've read some forums where dog's hair hasn't grown back so I got a bit worried. Has anyone had this problem before?