BiteyCat has been with us 4 months now and while not cured of his unfortunate liking for sinking teeth into skin, we thought he was much better. We've been playing with him regularly, distracting him with a kicker toy if he gets that look in his eye, and consistently giving him time-outs if he tries so much as a nibble. He's still not a cuddly cat but seemed to be getting much more relaxed, much calmer, and would even sit beside me on the sofa for short periods without incident,
But it seems he can't help himself. I let him into the bedroom this morning (which we've started to do, and he has seemed to enjoy) and after a very short paddle and purr, he very suddenly grabbed my arm and sunk his teeth into it. No warning, just lightning strike. Somehow or other he has also managed to scratch my nose. None of the damage is deep, but there's blood.
Sigh. He was doing so well but is now in disgrace in the hall while I calm down (it was a shock). At least it wasn't one of the DC but I'm now feeling thoroughly disheartened. It's like an impulse he can't control as soon as he spots bare skin.