Furry fetish involves animal costumes.
Furries are people who have an interest in cartoonish animal costumes and in particular to anthropomorphized animals or anthros (with human traits like speaking, walking upright, wearing clothes etc).
Most furries have a ‘fursona’. They pick an animal persona to represent themselves in the furry culture like an alter-ego and wear their so-called fursuit.
Contrary to popular believe, to some furries it is a sexual fetish (they enjoy yiff or furry porn) while other furries have a non-erotic interest.
Furries can come together in an organised gathering like a Furmeet or FurCon.