Hello, I have a kitten, aproximately 2 months old. He is very active and playful and likes to run around. Play fighting is one of his favorite hobbies especially with my fingers. Is it normal for a kitten his age to be so aggressive when playing? His play bites tend to get harder and more painful to the point where he just attacks my hand out of a sudden. He's had his shots and all so I'm not worry about health conditions. I'm more concerned about his behavior, unless it's his health causing him to behave like this.I let him wear a special cone fashioned from old toilet paper cores to keep him from playing so roughly and biting. Whenever he has it on, he becomes more gentle and affectionate and becomes lazy and sluggish and just wants to sleep. I don't let him wear it too long, only to tone down his rough housing but I'm wondering where his aggressive behavior is coming from. What is it and what can I do to prevent it? Is it normal for kittens this age to be that aggressive?