1. Physiological reasons: Cats are naturally reluctant to drink water. Their sense of thirst is not very developed, and their whiskers easily touch the rim of the water bowl when they drink, making them uncomfortable and thus resisting drinking. In this case, you can feed them food with a high water content or goat milk powder. Owners can also try using an automatic water fountain, as a flowing water source can increase a cat's interest in drinking. Alternatively, it's possible that their food already contains enough water, so the cat won't drink if it's not thirsty. 
2. Pathological reasons: A cat's reluctance to drink water can also be due to illness, such as feline panleukopenia, bacterial gastroenteritis, or respiratory diseases. Secondly, it could be due to oral lesions, such as ulcers at the corners of the mouth or gingivitis, which can also cause a cat to refuse water. In this case, it's necessary to take them to a veterinary hospital for further examination. Generally, after the underlying disease is treated, the cat will resume drinking water normally.
What happens if a cat doesn't drink water for a long time?
Cats that don't drink water for extended periods will suffer serious health damage, leading to problems with their liver, kidneys, and other organs. They may also develop conditions like fever, constipation, heatstroke, kidney stones, and cystitis. In severe cases, dehydration can even cause death. To help cats stay hydrated, owners can feed them wet food and fruit, or provide them with extra water when feeding them cat food, perhaps by adding a small amount of honey.