JC's best buddy, our next-door neighbors' greyhound, came for a visit today. The two are really close friends, but.... Aki is twelve, at least (he's a rescue from Spain, so we're not exactly sure), and increasingly showing signs of senility. He has jumped out of windows, sleeps in the kitchen sink (or at least tries to), and forgets his housebreaking at times. I haven't seen any signs of aggression, but today I was wondering if I should let them play together. They were playing chase - JC was chasing Aki, as usual, and it was hysterical: talk about role reversal - and I suddenly had this picture of Aki turning on Jamie. I hate the idea of breaking up a beautiful relationship, but I'm wondering if just monitoring them closely is enough. JC is five, big (over 13 lbs.), very quick and agile, and his claws and teeth are intact. Aki is showing signs of advanced age, including arthritis, prostate problems, cataracts, and missing teeth. But he's still 7 or 8 times Jamie's size. I think JC could hold his own against him, but I'm just not sure. I know JC is going to be heartbroken when Aki dies, so I don't want to steal precious moments from them. They've had a really close relationship ever since JC was 10 weeks old. Does anybody here have any experience with such a relationship?