I am going to be getting a Cavalier king Charles spaniel this year and contacted a kc registered breeder who has puppies available in 5 weeks but not in ruby or black and tan which I would like. She then told me she has a 6 month old adolesent ruby bitch who she was going to show but the dogs heart isn't in it and she is quite reserved and she said she will not push her dogs and they need to want to do it. She would be willing to sell me the 6 month old. Would this be a good idea? I know it would fit into our family well at that age but I'm worried about the cats as she has never been with cats. Any advise would be wonderful. Thanks in advance.