Funny, I actually made a blog on this just the other day. Let me quote:

Brony: (n) A fan of My Little Pony: Friendship is Magic who is outside the target demographic, and either self-identifies as a Brony (or Pegasister) or is part of the fan community.

 

Furry: (n) A fan of anthropomorphic animal art and/or other general paraphanilia (anthropomorphic can refer to physical anthros or to those who exhibit sapience or otherwise human-like minds), and either self-identifies as a Furry or is part of the Furry Fandom.

 

Zoophile: (n) Someone who bones or wants to bone non-sapient animals, or has a fetish for the same. (Some groups don't even make exceptions for sapience, either)

 

There can be, and often is, a lot of overlap between the three groups, but to consider that being one automatically makes you one or both of the others is incorrect and usually means that you're either ignorant or an idiot.

Though I wonder if Brony was a word before the Brony Fandom came about, and if it really does mean what he says it means?

It's also the name of a village of about 80 in Poland.