Zoology
WordNet
noun
(1) The branch of biology that studies animals
(2) All the animal life in a particular region or period
"The fauna of China"
"The zoology of the Pliocene epoch"
WiktionaryText
Etymology
From +
Noun
- that part of biology which relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct.
- a treatise on this science.