Summarize this article in one sentence.
Cats generally exhibit behaviors for a specific reason. Your cat may be knocking things over for many different reasons. These may include:  Exploring surroundings Expressing prey drive Getting your attention Hunger  Practicing paw maneuvers Boredom Your cat’s behavior may be related to a specific issue, such as underfeeding. Watch your cat to see when it most often knocks over your things. This can clue you into why your cat exhibits this behavior. Consider asking yourself the following questions:  Does my cat do this when there is no food in its dish? Does my cat do this when there are other people or company at my home? Does my cat do this when my home is quiet and there is nothing happening? Does my cat get enough time to play? Is it allowed to express natural hunting desires? Your cat may not respond to your attempts to deter it from knocking over things. This may be the result of a physical or mental health issue. If your cat continues to knock over things, contact your veterinarian. The vet may be able to diagnose underlying conditions and offer treatment. In some cases, your cat’s vet may refer it to an animal behavior specialist.

Summary:
Identify why cats knock over stuff. Observe your cat’s behavior. See a vet.