'Fursuit' is another name for an animal costume, generally referring to one intended to be as realistic as the maker can achieve, although 'mascot'-style costumes are often included, and some furries have/wear/make both. Some furries like a more 'toonish' type of fursuit. Not a mascot, but something that is as close to some of their favourite toon fantasies as possible. It's rather like trying for realism where the desired goal is an already anthropomorphic character.

By putting on a fursuit, you _become_ a furry, as close as you'll get without surgery, anyhow. But BE WARNED; not everyone in an animal costume is a furry!

Many furries feel that donning a fursuit helps them move closer to their 'true' furry form, and it's not at all unusual for furries to spend a lot of time in their suits, including sleeping in them. It has been reported by some furries that making love in a fursuit can be... very furry indeed!