>>9671776Grooming in cats is a sign of affection, but sometimes it's also about dominance. These cats seem quite calm right now, but the orange cats stance makes it obvious that the grey cat has no say in the matter. The orange cat is probably tougher and more dominant, or has higher social "rank" in case they live with other cats, although occasionally tougher cats will lose fights on purpose to be groomed by other cats they like. It's weird.