Least favorite dog?

Gotta kick out of a comment posting by Bob Salsbury / Unbearable Bobness of Being re: my wolves item in today’s “SR Headlines”. Quoth Bob: “Wolves are cool, Pomeranians however, are Satan’s Lapdogs.” Pomeranians? Admittingly, they make a nice crunch when a car wheel rolls over them. But my least favorite dogs are Rottweilers (and, yeah, it has everything to do with being bitten by one a coupla summers ago). Do you have a least favorite dog?