Cats like to be close to their friends. They like to snuggle up. A cats make friends with other cats in multi-cat environments. They treat us as a friend if we are gentle and kind to them. Then there's the warmth. May be that comes before friend! I don't think so though. You'll see cats sleeping on horses, climbing over deer and dogs and in this interesting case settling down on top of a best mate, a fancy purebred pig.