There are a number of ways in which cats can be abused. The most common form of abuse is physical abuse, where the cat is hit, kicked, or otherwise physically harmed. This can lead to a number of different behaviors in cats, depending on the severity of the abuse and the cat's personality. Some cats will become withdrawn and scared, while others may become aggressive.
Cats who are abused may also suffer from psychological problems such as anxiety and depression. These problems can manifest themselves in a number of different ways, including changes in eating and sleeping habits, increased clinginess, or even self-harming behaviors. If you suspect that your cat is being abused, it is important to get them to a safe place as soon as possible and to seek professional help.