The scientific study of the behavior, structure, physiology, classification, and distribution of animals.
the animal life of a particular area or time.
Quite simply, zoology is the division of biology that deals with the animal kingdom. It’s the scientific study of everything having to do with animals, just as botany is the scientific study of plants. Zoology is a huge field that covers the classification of every animal on earth as well as many broader fields of experimentation and inquiry related to animal life, and the field keeps expanding due to scientific advances that continue to open new areas of research.