check the litter box a couple times an hour and track his pee and liquid consumption. if he's not peeing, and/or he's having trouble walking, or showing signs of more extreme pain, take him to the emergency vet it will be expensive but that kind of thing is life threatening
today i noticed a bald spot behind my cats ear. i work and go to school so i'm not always with him, but i haven't noticed him scratching. there are no scabs, the inside of his ears look the same as ever, and he is not bothered when i touch it. any ideas? should i be concerned? attached are...