The oldest we have had was Jenny who was just a few days short of her 16th birthday when she sadly had to be PTS. Since then we've had several who were between 13 and 15 (and one special girl who was only 11) Our current "golden oldie", Zoe, is coming up to 14 and still going strong - can't remember the last time she went to the vet (touch wood!). I do know of several Cockers who made it to 17 but they seem to be the exception not the rule.