Greyhound running in a race

Greyhound running in a race

The fastest dog on Earth is Greyhound, which has been bred for coursing game and Greyhound racing. Since the rise in large scale adoption of retired racing Greyhounds, it has seen a resurgence in popularity as a family pet. The Greyhound can reach a full speed of 70 kilometres per hour (43 mph) within 30 metres (98 ft) or six strides from the boxes, traveling at almost 20 metres per second (66 ft/s) for the first 250 metres (820 ft) of a race. Photo: wikipedia

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