For the most part, the similarity is that they're something a group of people enjoys doing and has a lot of fun with, even though a lot of others don't really understand what the big deal is.
One of the similarities is that both have a handful of particularly enthusiastic fans who like to get crazy and take their displays of enthusiasm to ridiculous extremes. Have you ever been watching a football game where they zoomed in on a small group of guys in the crowd who were wearing only jogging shorts and had painted their entire bodies in the colors of their team? Now you wouldn't believe for a minute that everyone who's a fan of that team is going to get crazy like that. The same is true of furries.
For the most part, the similarity is that they're something a group of people enjoys doing and has a lot of fun with, even though a lot of others don't really understand what the big deal is.
One of the similarities is that both have a handful of particularly enthusiastic fans who like to get crazy and take their displays of enthusiasm to ridiculous extremes. Have you ever been watching a football game where they zoomed in on a small group of guys in the crowd who were wearing only jogging shorts and had painted their entire bodies in the colors of their team? Now you wouldn't believe for a minute that everyone who's a fan of that team is going to get crazy like that. The same is true of furries.