One of my DTS has started sinking his jaws into the other DTS on a worryingly regular basis. At first it was only when he wanted what the other was playing with, but recently I've seen it when he gets angry about anything (often nothing to do with the poor other DTS who first becomes aware of his brother's anger when he gets a tiny set of teeth 'fall' into him). Its breaking my heart to see the bitee getting chewed on, but the biter doesn't seem to be at all phased when I try and let him know its not acceptable! In fact he seems to think its very funny when I shout 'Noooooo!'. They're 15 months btw.
Does anyone have any advice on how to handle this. A 10 match ban is not an option.....