It's perfectly acceptable to leave some dry cat food in your cat's bowl before you go to bed, along with a fresh supply of water. This practice helps prevent dehydration and keeps them content throughout the night.

Providing a small amount of food at night is beneficial as cats tend to be more active during these hours and often have a heartier appetite than during the day. Leaving food out allows your cat to eat when they feel hungry without disturbing you. Always make sure they have a plentiful source of fresh water alongside their nighttime meal.
How Long Before a Cat Gets Hungry?
Generally, most cats will start to feel hungry within 4 to 8 hours. However, this can vary depending on several factors such as your cat's age, overall health, and individual eating habits. Kittens, for instance, may need to be fed more frequently due to their rapid growth and higher energy needs. Older cats might eat less often. Because cats have a faster metabolism than humans, their nutritional needs are greater, and they may experience hunger pangs quite quickly, sometimes within just a few hours.
To ensure your cat is well-fed and content, observing their individual patterns and adjusting their feeding schedule accordingly is crucial. Having food available overnight is a good way to ensure they can eat when they feel hungry. Remember to always provide fresh water along with food.