So, Kai can be nippy sometimes. When taken out of her cage and is put down to play with some toys set down for her, I'm usually doing something else like doing some school work, and she comes charging and bites at the nearest body part. Well its not an aggressive bite as I know how it feels like, but its a bite like she wants attention. I tell her 'No' and 'No biting' and gently push her away and try to ignore her but she comes right back and does it again. I try the 'No' and 'No biting' until she seems to calm down then I give her attention. Then other situations when I'm working on Harness training, I put the harness beside her so she can see that the harness is not a threat. She then tends to try to chew on it and I try to tell her 'No' but she doesn't seem to listen until I actually take the harness away. Then if she in a session where I'm gently draping the harness on her back she tries to chew on it and the saying 'No' still doesn't work. I need help trying to reinforce 'No' and 'No biting' to where once I say it, its one warning and it stops. Help?