yup its actually pretty common. Happy hates Schnauzers, Pionters, and Shiba Inu's. she is fear aggressive of starnge dogs in genral but with those 3 breeds she show real dominance type aggression. similarly she is no problem at all with Goldens or Labs, not even fear agression with them lol

Misty does not have a breed aggression so much a a colour one. she is aggressive towards large red dogs. for example a black and tan Dobie she has no problem with but a red Dobie will set her off. same with Pitties she has met, she is fine with any colour but red. for her is is only rich dark red, NOT orange like a golden or Toller or "fox red" lab.