Mort, the picture I posted isn’t a crested pup, but a hairless-mexican. The second in the pic is a miniature greyhound…both of these look a lot like the first photo…well the geyhound more so though. These dogs are routinely used in racing too and become aggressive because of the trained behavior to chase a ‘rabbit’ (sometimes these are living rabbits tethered to a rotating pole that scream in genuine terror as the pole sweeps around the race arena). People adopt those that are no longer racable hounds after about 2 years with the understanding that they may not exactly be child-friendly anymore. Often they are simply put to death after those 2-3 years of serving as a racing hound and huge piles of them burned or buried.
There has been, off and on, an enormous outcry from people because of the treatment, but I haven’t heard much for years now.
However, this is why I lean toward one of these unfortunates.