Theres usually a reason. My cats cries when he's lonely, see's another cat, is hungry or just wants some attention.

Have one person hold one cat and have another hold the other cat. Have them face to face and repeatedly do it. Tell them be nice and when they fight, smack them on the nose and tell them 'no' like a dog. But it has to be with in a minute or 2 of when … Read more

Cats are very clean animals, thats basically what they do. Its normal.