Isn't there a species or type of whale that is called a cachelot? I'm not sure about that though.
I think that's a Norwegian Elkhound, but I wouldn't guarantee it since I'm more a retriever person.
I believe Moby Dick was a cachelot. I don't know if that's a matter of differing names for the same species of whale, or a language thing, but I'm sure the other adressee can answer that question.