We have recently been looking for a dog. We have a 7 year old female cat. Several years ago we had my wife's sister's dog for 3 days at our house. The cat marked the living room furniture on 2 occassions immediately after the dog had left. Obviously the cat was not happy about us having the dog in the house. While looking for a dog at our local animal shelter, one of the staff told us that we should not get a dog, as our cat would not accept it. Is there any way that we could get a dog, and still keep our disgruntled cat?
Why don't you try pet sitting for another dog so you can see what your cats response is going to be. If the cat becomes stressed or starts to urinate inappropriatly then I do not recommend that you get a dog. good luck, vetcare