The domestic cat[1][2] (Felis catus[2] or Felis silvestris catus[4]) is a small, usually furry, domesticated, and carnivorous mammal. They are often called a housecat when kept as an indoor pet,[6] or simply a cat when there is no need to distinguish them from otherfelids and felines. Cats are often valued by humans for companionship, and their ability to hunt vermin and household pests.