I was just wondering i have a jack russel that is 8 years old. He is such a BEAUTIFUL dog. But he just goes crazy when he sees Cats and other male Dogs. Not the friendly crazy the k-i-l-l-i--n-g Crazy. Recently i tried to introduce my friends Cat to "dexter" But there was chaos. He just goes crazy and i thought he is 8 years old now and i can get a Cat without worrying about him. I just dont know how i am supposed to do it.