'The term 'yiff' is sometimes used to indicate sexual activity or sexual material within the fandom.' ( Furry Fandom - Wiki) Furry yiff porn, both animated and starring real-life furries, is becoming an increasingly popular genre on the web and adult furry comics are particularly popular within our furry room, where chatters can post pictures and drawings of their fursona to give the room a truer sense of their character. Many people are interested in the fandom itself and have little or no interest in the adult side of things. Today large convention centers dedicated to the fandom are regularly filled. It is a subculture that has stepped out of the closet and grown in popularity in recent years.
The Furry Fandom refers to people interested in anthropomorphic animal characters with human personalities and characteristics.