What are the most common behavior problems I might experience with my cat?

The number one problem is inappropriate urination or defecation. We just assume cats are going to use their litter box. We never train them to do it because it's just a natural thing that they do. It's great, and it's why cats are so easy to care for. If they're not using their litter box, it's a big concern for owners, and they bring their cat to the veterinarian because of it.