Source: Quinault Oral Legend
A long time ago, in a certain village there lived a young girl who had a dog of which she was very fond. She took the dog with her wherever she went; and at night, as was a common custom at that time with young girls, the dog slept at the foot of her bed.
Every night he would change into human form and lie with the girl, and in the morning, before it was light, would turn back again into his dog shape: so no one knew anything about it.