We have a wonderful recently adopted (from a good home) 2 year old neutered declawed male Manx. The original folks could not stop hom from being aggressive with their dog. We want to leave him with my son's family when we travel, but on the first visit he was aggressive with their female (clawed and normally assertive) year old cat. Any suggestions? I hate to leave him home alone, although I do have a woman who can come in 2x a day to feed and play. Thanks, Sheila