I hate furs who give other furs a bad name. That includes, but is not limited to:
Furs who are overly sexual for no reason
Furs who absolutely hate furries who like yiff (if you don't like yiff, its fine but don't push your beliefs. furry fandom is about friendship and equality.)
Furs who are overly stereotypical
Furs who hate or are prejudiced towards furries of a certain species (I.E. "I hate foxes, you all are just a bunch of noob furs lololol trolol you guys only joined because yiff fags" etc etc etc.)
Furs who mix their species more than 4 times. "I'm a pigottoxolfotedragon fennec." Its okay if you're a folf or a coyox or a pandacoon or a fennec dragon but don't just pile every species into one, then you're just snapping legos together.
Furs who aren't open minded. If youre not open minded how in the god damn did you get into the fandom in the first place.
Furs who think theyre better than non-furs.
Furs who are overly self-righteous
Furs who bump and grind every fur they see, its okay if you want to yiff every fur you see, but don't force yourself on them.

etc etc etc etc etc. Sorry I just hate furs who give the fandom a bad name.