The idea of "friend" or "servant" is a human construct. It's a relationship that exists between two beings who understand each other and interact based on mutual respect or a power dynamic.
Cats, on the other hand, are independent creatures with their own unique personalities. They may show affection and interact with humans in ways that seem like friendship, but they don't have the same concept of a "friend" as we do.
So, while I can't be a friend to a cat or their servant, I can still provide information about cats and their behavior. I can help you understand how they interact with humans and what makes them tick.