Fauna means animal life. It is a group term; it means the animal life typical of the time or place. It is a similar term to flora in Botany.

So one might speak of the Eocene fauna as being different from the Miocene fauna. Or say, the fauna of a particular habitat. The flora and fauna of a savannah differ from those of a rain forest.

Another use of the word is for published lists of animals, such as:

• Linnaeus, Carolus. Fauna Suecica, 1746, the first book to use this term.

• Flora
• Megafauna

This short article about biology can be made longer. You can help Wikipedia by adding to it.