Why Do Cats Always Try to Drink from Your Cup?

Most cat owners have experienced this: you’ve just poured yourself a fresh glass of water, turn around for a moment, and your cat is already happily licking it. Even when their own water bowl is clean and full, cats often seem to have a special fondness for the water in their owner’s cup. This leaves many people wondering—does my water have catnip in it?

In fact, this “little habit” isn’t mischief or stubbornness. It comes from a combination of a cat’s natural instincts, psychological needs, and environmental factors. Today, let’s take a closer look at why cats are always eyeing the water in your cup.

First, cats have an instinctive preference for fresh and moving water. In the wild, cats tend to avoid still water, which can harbor bacteria or parasites; they prefer running water. Water in your cup is usually freshly poured. In addition, slight movements at the rim of the cup may create the illusion of flowing water, tricking your cat into thinking it’s a “natural” source. Glass or ceramic cups also make the water more visible, which can further spark a cat’s interest.

Second, a cat’s curiosity and desire to explore play a major role. Cats are naturally curious about their surroundings, and a cup that their owner uses daily is an intriguing object filled with the owner’s scent.  To a cat, drinking from your cup is like a small adventure that satisfies their urge to explore the unknown.

Third, drinking from your cup can be a way for cats to express closeness and attachment. Cats have a very keen sense of smell, and your cup carries your personal scent, which may subtly transfer to the water. To a cat, your scent represents safety and comfort. Drinking water that carries your smell can make them feel secure. At the same time, this behavior can be a form of bonding—cats want to be part of your life and may imitate your actions to feel closer to you. Just as they rub against you or sleep on your bed, stealing sips from your cup can be their own special way of showing affection.

Finally, there may be issues with the cat’s drinking environment. Many owners place the water bowl next to the food bowl or near the litter box, which can make cats uncomfortable. Cats have a strong sense of cleanliness and dislike food residue contaminating their water and odors from the litter box. Your cup, on the other hand, is usually placed in a clean, quiet spot like a desk or coffee table—an environment that better matches a cat’s preferences.

In short, cats drinking from their owner’s cups is not a sign of being picky or naughty. It’s the result of instinct, psychological needs, and environmental factors working together. Once you understand the reasons, there are simple ways to improve the situation—such as providing a water fountain, keeping bowls and drinking areas clean, and placing water bowls in suitable locations. This way, you can meet your cat’s hydration needs and reduce their interest in your cup. After all, for cats, clean and fresh water is their favorite drink—and an owner’s understanding and care are what truly make them feel safe and loved