How fast is the fastest animal?

63 miles per hour is one figure quoted for the Cheetah, which is the fastest land animal.

Edit by Kathleen:

I watch many documentaries, and here is some info I have gathered over the years which may help further, as you did not specifically ask for the fastest land animal.

The overall fastest animal is the Peregrine Falcon, which can, in a dive, reach speeds of up to 200 mph. (cheetah is fastest on land, recorded up to 72 mph!)