Have Cat Questions? Ask a Cat Vet Online.
My name is***** and I am sorry to hear that your kitty is sick. Is he still eating and drinking? Does he possibly fight with other kitties or wildlife in your neighborhood? Can you take his temperature? The best way is in the rectum. Normal temperature for a cat is 100.5 to 102.5 degrees.
If he continues to be lethargic, I would recommend taking him to your regular veterinarian tomorrow for an exam. I am worried that he may have an abscess or other injury that is causing him pain and fever leading to his lethargy.
Does this help? What other questions do you have?
Can you keep him locked inside tonight to monitor urinating and defecation?