My roommate has a tokay He got in 2006 and he was a big boy when he got him. He is slowing down and his tail is starting to thin out even though he is eating. I am a bit worried about him (I am in charge of cleaning all the cages and feeding all the critters so I feel like he is mine). I checked his mouth and the black is turning pink, is that unusual? I love his call and it also see like at times it is a bit weak. I figure from what I can figure is his about 15 y.o. How old do these guys live to be? He is in 24 x 12 x 24 glass tank. He has a heat lamp to keep his warm spot about 88. He has been active and hasn't changed much, except slowing down a bit. He use to devour all his crickets as soon as they where in the cage, now he doesn't eat them all at once, but he does end up eating them all over a few days. Anyone have any ideas how I can get him to gain some weight? I would like him to be like he was a few months ago with a very fat tail and gobbling up anything that moved in his tank (even your hand lol)