Hi there, i had the same problem with Ethan when he was around 9 mts too. Thing is though he was biting other babies at playgroups etc... I dealt with it by telling him firmly 'no, you do not bite', bringing him away from the other child (so has not to cause them further distress) and making him sit by my feet for a few minutes. I mentioned it to my health visitor who agreed i was doing all the right things. Ethan quickly grew out of this stage but he is now going through it again (he is almost two), he only ever does it at day nursery though (must be something about wednesdays) so i am never around to discipline him. I don't know wether JD is biting other children or just you but if it is just you i would be more inclined to think that it is a playful, loving bite (if you know what i mean!). My cousin had this with her baby. It's tough when they can't express their feelings verbally isnt it?