Cats need water to stay hydrated, just like other animals and humans. Cats prefer to drink cold water versus stagnant warm water. So, cats are particular, unlike different types of animals that can be satisfied with almost any water temperature. It's because chilly water speeds up their metabolism and regulates their body temperature when they get too hot.
Cats' love for cold water stems from their species living in the wild outdoors. They look for clean water from springs, which is why they cats also enjoy drinking flowing water out of a faucet or hose.
Some cats also like ice cubes. They have fun playing with them and licking them. However, ice cubes might be too cold and even cause a brain freeze like humans can experience. Essentially, since water can change a cat’s body temperature consuming something too cold can cause the brain to react by narrowing blood vessels. This leads to a headache, similar to what we experience when we eat a popsicle too fast and get brain freeze. So, it’s best to avoid ice cubes or only give your cat one or two on a really hot day.