Iggys definitely look like they're as fast as a car, but their top recorded running speed is much closer to 30. Greyhounds will go about 40 and a thoroughbred horse will run 45. I also have one, and...
It is the fastest breed of dog. A combination of long, powerful legs, deep chest, flexible spine and slim build allows it to reach speeds of around 70 kilometres per hour (43 mph).
Greyhounds run fast because they have been bred for running. At some point in the past, only the best runners among those dogs were permitted to breed. Doing this over several generations resulted in...