
Rattlesnake
A desert alarm clock with a noisy tail.
Rattlesnake vs Cheetah
Tonight's science rumble is set in the visitor lawn, now closed for SCIENCE. No snacks were harmed.
Rattlesnake
Crotalus atrox
A new rattle segment is added each time they shed.
Mice, rats, rabbits — small warm snacks of the desert.
Cheetah
Acinonyx jubatus
A cheetah's tail is a rudder. It steers mid-sprint like a boat.
They prefer gazelles and other speedy snacks they can outrun.
Who do YOU think wins?

Cheetah
The land-speed record in spots.