So to begin I have two doll face persians, one who is 2 and one who is 1, they are both used to attention and are best friends. When we got the second cat we were afraid that out first cat wouldn't get along with the new one which it took about a week for them to become best friends. So about 3 weeks ago my family rescued a westie dog who is 6 years old, he is very well trained, hasn't had one accident in the house, sleeps when he needs to, and plays when he needs to. He's really good at knowing what stuff is the cats and stays out but when he was a chew toy he destroys is to pieces. When we tried to introduce the cats to him they rain off and he chased after barking. Both have hissed at him which i've never heard them do ever. We've tried everything to get them to calm down, it's mostly the dog if he were to calm down the cats will start to ease up to him. In a year my daughter is taking the cats to college, so i would hate to get rid of the dog. If you have any suggestion please help!