Some basenjis seem to have particular kinds of dogs they don't like. My Abbey is best friends with a rottweiller, a black lab, and a dalmation, but she hates golden retrievers! What do they go by, coat color?? She goes after anything that moves at the vet's though. My first basenji many years ago, Pumpkin, climbed trees to get after squirrels, and fences were no problem either.