Who knows what "discipline" is meted out to racing dogs, but I'm sure they are not allowed to chew the lure, so I was not surprised at her anxiety whenever she tentatively bit into a toy.
The Greyhound racing industry in Australia is responsible for many thousands of Greyhound deaths every year. This is the personal story of one of those poor dogs, but at least this one had a precious few weeks of normal life at the end.