Greyhound Trainer
A person whose ego demands that they be seen as successful in a "sporting pursuit", but who lacks the intelligence or self-disipline to apply themselves personally to the goal. Famous for eagerly bragging about how "good" they are to the canines that they personally cage and exploit, they resort to name calling, abuse, and even threats when confronted by statistics showing their industry in an honest and unfavourable light.
"That greyhound trainer says he takes such good care of his dogs, but he kills them once he's gotten all the money he can out of them."