I don’t know why he does this. Is it good or bad? He is biting down on the bed and kneading it with all legs. And purring. He does it for like 4-5 minutes and just stare at one place like crazy. I feel like something wrong. This is the second time I've seen him do this.
As long as he is healthy and not showing any physical discomfort, I think he is ok. I think maybe doing this is comforting to him. He gets into a zone. My kitty will make biscuits on my arm while staring at one place. Does he lay down on the bed after doing this?