The domestic cat is a small, typically furry, carnivorous mammal. They are often called house cats when kept as indoor pets or simply cats when there is no need to distinguish them from other felids and felines. Cats are often valued by humans for companionship and for their ability to hunt vermin. There are more than 70 cat breeds, though different associations proclaim different numbers according to their standards.
A group of cats is referred to as a "clowder" or a "glaring", a male cat is called a "tom" or "tomcat" (or a "gib", if neutered), an unaltered female is called a "queen", and a juvenile cat is referred to as a "kitten". The male progenitor of a cat, especially a pedigreed cat, is its "sire", and its female progenitor is its "dam". In Early Modern English, the word 'kitten' was interchangeable with the now-obsolete word 'catling'.