Our cat has been lethargic for the past 3 days. He has not eaten anything nor has he taken any water in the past 3 days. Sometimes he cries for food or water but does not take when put out for him. He moves very rarely, but when he does its just to move to another spot to lie down and sleep some more. He appears uncomfortable. I don't believe he has had a movement or voided in this period of time. At first we thought it might be because of the heat..he is a house cat, age 11 with long fur. It appears to me as though he is bothered some by light and sound. what is the problem?