Search “fastest animal” and you will find a dozen different cheetah speeds, most without a source. We wanted one place where every number says where it came from and how sure anyone can be about it.
So every figure here carries a label: official, verified, claimed, estimated or disputed. A manufacturer’s top speed can sit next to a ratified record, and you can tell them apart at a glance.
Who it is for
Curious readers settling an argument, enthusiasts who care about the difference between a claimed and a timed run, and students, teachers and writers who need a figure they can cite.
How it is made
The full method is on How we verify. If something looks wrong, every page has a button to tell us.