Why in greyhound racing do they chase a hare when dogs like to chase cats?
Greyhounds don’t chase a hare, they chase a mechanical lure. Different tracks attach different items to the end of the lure. Some use stuffed animals shaped like white rabbits or white bones, others just use bright white flags (and as another answer said in lure coursing the dogs chase a white plastic bag). The color is fairly uniform simply because something bright white is easy for both dogs and humans to see. Realistically though most racing greyhounds don’t actually need a lure to run but it does help them focus on racing rather than being distracted by the crowd. And just a point of information, young greyhounds are not trained to chase live animals either. Most training centers use squeaky toys (think how much all dogs love them) attached to a rope. The dogs want to play with the toy so they chase it, when they do a good job then the trainer allows them to catch the toy as a reward.
