September 24, 2014 2 Greyhound Vs Cheetah: World’s Fastest Dog In Super Slow MotionThe Greyhound is the world's fastest dog, clocking in at up to 45 miles per hour. So how does it compare to the world's fastest cat, the cheetah? Watch the showdown here.READ MORE 3 Million Dogs, Dogbook, Inspirationalbest animal videos, best dog video, Cheeta, Cheeta Video, Cheeta Videos, Cheetas, dog, Dog videos, dogs, Fast dog, Fast dogs, Fastest animals, Fastest cat, Fastest dog, Greyhound, greyhound video, Greyhound videos, Greyhound Vs Cheeta, Greyhounds, Racing Dogs, Showdown