A style of costuming that focuses on animal costumes (fursuits), usually custom-built, mainly associated with furry fandom, but also includes mascot costumes. Fursuiting events include costume parades and dances at conventions, charity and other public events, mascot competitions, and fursuit bowling.

Literally everyone, ever. Including the writer of this definition.

a habit of certain, usually obese or otherwise disfigured, ill-adjusted individuals, whereby the costume and persona of "really cool" animals is adopted in everyday and sexual life.