Dogs get lice. It's a different species than humans but can crawl on humans. It's supposedly rare but mine got it from a visit to the vet 2 years ago. I had to bath them every other day with seargents flea and tick and I used it on my hair also every day. Lots of permethrin spray and de sprinkled on carpets cleared them up. what a pain. Positivly bizzare that these are now moving to the sinuses. I wonder if they are a new breed.