Cat flu

There is also the possibility of indirect spreading though contamination of food bowls, bedding, litter, or human hands.

[2] More rare symptoms, meanwhile, include: a loss of appetite, lethargy, fever, enlarged lymph nodes, and blepharospasm (squinting).

Cat flu is typically treated at home and generally focuses on the animal's symptoms.

[3] If a cat is suffering from excessive lethargy or dehydration, veterinarians may recommend hospital stays and, in extreme cases, appetite stimulants or the use of intravenous catheters or feeding tubes.

The main protagonist Jim later experiences these symptoms in the end of the film, such as constipation, vomiting up massive hairballs and blood, and gradual weakening of his body, before his wife discovers his corpse the next morning with cat eyes and a grinning face.