The cat, often referred to as the domestic cat to distinguish from other felids and felines, is a small, typically furry, carnivorous mammal. It is often called house cat when kept as indoor pet or feral/feral domestic cat when wild. It is often valued by humans for companionship and for its ability to hunt vermin. When Cats purr it's a sign of affection and happiness, when they rub their bodies against your legs it is a sign that they like you and an attempt to get their scent on you because to them you smell relatively bad.