I have a 13 yr old phinx that has some hair, ever since we lost another female the same age , hes been sleeping and eating and going to the scratch box and back to sleep in his lttle warm blanket on a chair, the vet said a couple months ago that he was healthy for his age and another female kitten may cheer him up even though he was nuetterd. so we got another kittten female and shes really too much playing for him he even hids and sleeps more yet still eats and goes to the litter box like normal,hes got a haqnging growth under his belly in the rear sorta , but it dosent seem to bother him .be cause of his moping around is it his nature because hes just old and tired.