My neutered male, Burt, has always been more laid back and friendly, but since his 12th birthday almost a year ago he has really become laid back. He is sleeping more often then not, probably 6 out of 8 hours. He has also lost some weight, but I did switch him to a better grade of food a couple of years ago and wondered if that caused him to slim down. He is due to go in for a checkup in November so I'll find out more then, but is there anything special I should bring up? He has a water fountain and drinks quite often, and 'snacks" on his dry food several times a day. He doesn't 'look' sick, bright eyed and quite active when he's outside, he runs and plays. He also has his attacks of "crazys" where he races around the house at least every other day. He just doesn't look the same as he used to. (of course I don't either!) Does he sound normal for an older cat, or should I be more worried?