People that like animals. Not actual animals, no. Just the video game or anime-type ones. You'll usually see them online with usernames like "*name*TheNekoFox" (never mind the fact that "neko" means "cat" and a fox is a dog. F**k logic) or "Starflightthenightwing"
I would consider "furries" as being very different than people with fetishistic desires for animals. It's more like they want to *be* the animal.
As for our resident dragon spammer, I'd say google "otherkin"
Apparently tumblr just creates these subcultures left and right.