One furry phenomenon that I love is when a cartoon has exactly one cute anthropomorphic girl in it and she enters into the rotation of furry babes entirely disconnected from her original story. She probably have fans who couldn't tell you off the top of their head what any other character in her show is called.

It must be pretty funny from the other side of the coin too, you can tell if someone is a furry by which specific character they are intimately familiar with over any other.

You can probably tell with a fair degree of accuracy if someone is a furry based on which Animal Crossing villagers they can name off the top of their head. This one is particularly fun, they are all furry animals so you'd think the more they can name, the more of a furry they are, but if they can name exactly three villagers and they are Isabelle, Raymond and Ankha, then you Know...