Answer:

zoology

Answer	Crossword Clue
ZOOLOGY	Animal life
ZOOLOGY	Aristotle subject
ZOOLOGY	One of Darwin's fields

ZOOLOGY	Natural history branch
ZOOLOGY	Fauna
ZOOLOGY	Science treating of animals.
ZOOLOGY	Study of animal life.
ZOOLOGY	Alfred Kinsey's field
ZOOLOGY	Natural history museum subject
ZOOLOGY	Animal life of a particular region