Here are some of the most common behavioral problems in cats:

1. Inappropriate elimination: This includes peeing or pooping outside the litter box, or in inappropriate places like on the bed or on the carpet.
2. Scratching: Cats scratch to mark their territory and to maintain the health of their claws, but it can be a problem if they are scratching furniture or other household items.
3. Aggression: Cats can become aggressive for various reasons, such as fear, territoriality, or play. Aggression can manifest as biting, scratching, or hissing.
4. Excessive vocalization: Cats may meow excessively for attention or out of boredom.
5. Separation anxiety: Cats can become anxious or distressed when they are left alone, which can result in destructive behavior or inappropriate elimination.
6. Fears and phobias: Cats can develop fears or phobias of certain things, such as loud noises or unfamiliar people or animals.
7. House soiling: Cats may soil inside the house due to a medical problem, stress, or a preference for a certain type of substrate (such as sand or grass).

If you are having behavioral problems with your cat, it is important to consult with a veterinarian or a professional animal behaviorist to determine the underlying cause and develop a plan to address the problem.