This is such a big problem for us. I am the "dog lady" of the neighborhood. My next door neighbor is the "cat lady." It just worked out that we happen to live right next door to each other. I will soon have 6 dogs and she has about 20 cats. We live in subdivision in the country so all her cats roam the neighborhood. She does take really good care of them. They torment the heck out of my dogs. I have actually caught one hanging in a tree branch over my fence switching its tail just out of their reach. The go nuts. She complains, and I tell her they will quit barking when she puts her cats in. It drives me crazy. But I can't get mad at my dogs. It cats are on their property.