A few days ago, Sunny has gotten a bit more playful and energetic. However this has resulted in him to want to “nibble” on me. It’s not as strong as a bite out of aggression or fear, but he picks and chews on my skin/fingers whenever he gets the chance. I’m assuming he’s doing it out of curiosity and that he’s trying to see if my skin/fingers are a good toy. It would be fine if he only did this once in a while or did it gently, but it’s gotten to the point where it hurts badly whenever he does it and he nibbles whenever he can. Does anyone know why he could be doing this and what could be done to stop the behavior?