I think that is very VERY dangerous advice. And to any casual readers, I'd like to make plain that it is an American article, and while I have no idea how racing greyhounds are kept outside UK, over here they are kennelled in pairs in big kennels usually with a pen attached.
It is deeply unwise to touch any sleeping animal, including people, by touching them. For the most part, there is no need to touch a sleeping dog anyway (I get the impression she wants to touch hers just because she wants to touch it
right now instead of having the courtesy to wait until it wakes up).
Aggression when suddenly awakened is a survival tool. Therefore we CANNOT train it away.
Jasper is - as we all acknowledge
![Laughing :lol:](./images/smilies/icon_lol.gif)
and extreme case, but he is as he is. I suspect if you star messing around with him when he is drowsing off or asleep or just awake and confused, he will react hard and fast.