Top definition
Someone who has sex with animals. Derived from a combination of fauna (animals) and fornicate (to have sex outside of marriage).

Opposite to Fauna Fan; someone who loves animals in the much nicer, traditional sense.
Joe was a Faunacator, who loved his dog a lot more than he should have. Fauna Fans rejected him from their clubs after that.
by Fauna Fan October 17, 2007
Happy St. Patties Day!