Yes, I've heard from others that KOA discriminates against Rottweilers, Pit Bulls, and Dobermans. I googled KOA and Rottweiler...and bunch of individual KOA sites came up, where they said no Pit Bulls, Pit mixes, Rottweilers, or Dobermans allowed. A-holes.
KOA Reservation: Lake Placid/Whiteface Mountain Campground Reservations