Quote Originally Posted by Mr. MacDougall View Post
To quote Wikipedia's article on the subject, "Furry fandom is a subculture distinguished by its enjoyment of anthropomorphic animal characters. Examples of anthropomorphism in the furry fandom include the attribution of human intelligence and facial expressions, speech, bipedalism, and the wearing of clothes. Members of this subculture are sometimes known as furry fans, furries, or simply furs."

Some furries enjoy thinking of themselves as part-animal, thus the wearing of tails, horns, and / or ears.
ROFLMAO! That's hilarious. Thank you MacDougall!