Cats in the late stage of renal failure will show symptoms such as dehydration, convulsions, weight loss, lethargy, etc. Once discovered, the cat should be taken to the pet hospital for examination and treatment immediately. Generally, the cat's body organs and tissues will be slowly damaged after entering the late stage. The possibility of cure will be greatly reduced, and the cat will be at risk of death at any time. The owner can spend more time with the cat in the final time and choose euthanasia to alleviate the cat's pain.