zoology

noun, plural zo·ol·o·gies.

1. the science or branch of biology dealing with animals.
2. a treatise on zoology.
3. the animal life of a particular region.

noun plural -gies

1. the study of animals, including their classification, structure, physiology, and history
2. the biological characteristics of a particular animal or animal group
3. the fauna characteristic of a particular region
4. a book, treatise, etc, dealing with any aspect of the study of animals

n.

1660s, from Modern Latin zoologia, from Greek zoion “animal” (see zoo) + -logia “study” (see -logy).

1. The scientific study of organisms in the kingdom Animalia, including their growth and structure.

The scientific study and classification of animals. (See Linnean classification.)