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It's another dog vs cat battle this week, as the boys film the world's fastest recorded canine the greyhound. We find out how it compares to the world's fastest cat the cheetah.

Thanks to Mark Johnston's greyhounds Sooty and Sweep.

Duncan Barbour is an expert allterrain driver. Please don't try this at home!

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Original and stunning high definition slow motion footage of animals and their actions. Brought to you by our very own team members; animal nerd Sam and camera geek Simon.