- Attention-seeking: Cats may nudge you as a way to get your attention. If you respond to their nudging by petting or playing with them, they will learn that nudging is an effective way to get your attention.
- Scent-marking: Cats have scent glands in their paws, and when they nudge you they may be leaving behind their scent. This is a way of marking their territory and letting you know that you belong to them.
- Comfort: Some cats may find it comforting to nudge against you. Your underarm may be a warm and cozy spot that they enjoy resting against.
- Curiosity: Cats are naturally curious creatures, and they may nudge you simply to investigate what you're doing or what's in your hand.
- Affection: Cats may nudge you as a sign of affection. When a cat nudges you, it's their way of showing that they love and trust you.