Meet Cheetah, it's the Defense Department's robot cat.
The Defense Advanced Research Projects Agency says it's the fastest robot ever.
It has just zipped past its own speed record in a treadmill test at more than 28 miles an hour.
Cheetah's previous record was 18 miles per hour.
DARPA has been working with Boston Dynamics to create robots that can go fast on rough terrain.
Cheetah's going out in the field next year.
Hopefully, it doesn't meet a real life cheetah, because that cat can run as fast as 60 miles an hour.