This confused me as well. I took a general nutrition course (not animal related) that was offered from the food science department of my school and didn't know if that qualified as a biology course or not? I think I just put other.
Any one have any advice on these other courses:
Ornithology -Offered through my school's biology department - should it be a biology course or an animal science course?
Animal Anatomy & Physiology - Should it be animal science or physiology?