A cat's teeth can develop plaque and tartar just like humans' do. Chewing on dry food or raw bones is usually enough to keep teeth clean naturally, but sometimes a cat's teeth will have to be cleaned. Most cats don't like this, so you may want to wrap it in a towel to protect yourself. Using a special pet toothbrush and paste, gently brush your pet's teeth once a week or so. Don't use human toothpaste, since it can upset an animal's stomach. Eventually, your cat may learn to enjoy this routine and appreciate the extra attention. If you notice signs of serious dental problems like red, inflamed gums or loose teeth, you'll need to take your cat to the veterinarian. Dental problems may lead to infections which can cause serious heart or kidney conditions.