Ed has done that and I've asked him to stop. A couple of weeks ago, he chomped on my back while I was sleeping and he latched on to Ed's arm while he was doing his paperwork. He's not doing aggressive biting anymore. But also is getting no cat treats. I didn't want to disparage a brand on the net so I didn't name it. I'm unable to leave a note on your comments. I'll go to your cat quiz and leave my note there.