A simulation has shown the stunning difference in speed between Usain Bolt and the fastest dog in the world.
Eight-time Olympic gold medalist Usain Bolt may have retired from athletics in 2017, but it's hard to see his world records ever being broken.
The Jamaican sprinter broke the 100 metres world record in 2009, clocking a time of 9.58 seconds during the World Championships in Berlin.
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Bolt also set a new 200m world record that year with a time of 19.19 seconds.
Nobody has managed to better Bolt's records in the 15 years since, although the likes of Yohan Blake, Tyson Gay and Noah Lyles have come relatively close.
Being the fastest human on the planet, there is literally nobody to compare Bolt to.
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That's led people to wonder how he would fare against members of the animal kingdom; a simulation once emerged of the star racing a cheetah.
Now, a fresh computer-generated simulation has emerged of Bolt going head-to-head with a greyhound, the fasted breed of dog in the world.
Thanks to their long, powerful legs, deep chest, flexible spine, and slim build, greyhounds can reach average race speeds exceeding 64 kilometres per hour (40 mph).
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By comparison, during his world record-breaking 100m effort in 2009, Bolt averaged a speed of 37.58 km/h (23.35mph).
The simulation, uploaded to YouTube by MotionAthlete, shows just how badly Bolt would be beaten.
In a straight one-on-one 100m race, the greyhound crosses the finish line after just 5.80 seconds, almost four seconds ahead of Bolt.
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Even when Bolt is given a massive head start, the greyhound catches up and pips him to the finish line.
When asked by World Athletics Inside Track which of his records will be the first to fall, Bolt replied: "I think the 100m's going to be harder [to break] because it's quicker, and if you make a mistake during the race you're not going to get it.
"It's a lot more technical so I think maybe the 100m's going to go last."
Topics: Athletics, Usain Bolt, Spotlight
Alex Brotherton