As nouns the difference between faunae and fauna
is that faunae is plural of fauna while fauna is animals considered as a group; especially those of a particular country, region, time, etc.
As a proper noun Fauna is
the goddess of animals, nature, spring and fertility; she is also the consort of Faunus.
fauna
English
Noun
(uncountable) animals considered as a group; especially those of a particular country, region, time, etc.
(countable) a book, cataloguing the animals of a country etc.
Derived terms
* aquafauna
* epifauna
* faunal
* infauna
* macrofauna
* megafauna
* meiofauna
* mesofauna
* microfauna
Coordinate terms
* flora