There's a difference between simply liking furry porn because you think it's hot and straight up identifying as a furry.

I think being a furry is more about being a fan of anthropomorphic animals and forming part of the community. Heck, being a furry isn't even necessarily a sexual thing.

If you like it because it simply turns you on, you're not a furry, but if you like it because you're specifically interested in the fact that it's an anthropomorphic animal, then yes, you're a furry.

Tbh, the topic of furries is so controversial and convoluted that it's basically impossible to come up with a concrete definition.