If your cat hasn't pooped for two days, first observe its mental state and appetite. If everything is normal, give the cat more water, or you can give it some probiotics or hairball remedy to help with bowel movements.

If your cat has a poor appetite or is lethargic, it may be due to digestive problems or illness. It is recommended to take your cat to a veterinary hospital for examination as soon as possible to find the cause and take appropriate treatment.