i've had my large painted turtle for approximately 16 years now. the last few weeks he's become more and more lethargic and has been losing his appetite. now i can't even coax him to eat anything. i'm going to try and find someone locally who might be able to help me or give me some idea how to make him well...in the meantime, is there any way to stimulate his appetite? (i have a feeling if i could get him to eat he might perk up.) is it possible he might be dying of old age? i read somewhere they only live 15-20 years. any help or suggestions would be greatly appreciated...thanks.

