In terms of core sleep tracking, the Cheetah Pro performs pretty well. We wore it alongside the Oura Ring Gen 3, a smart ring that serves up great sleep tracking, ...

Sleep tracking is good, although it is a far cry from the gold-standard Oura Ring Gen 3. The Cheetah Pro gives you a sleep score (out of 100) and tracks all four sleep stages.

The cubs' big reveal was announced on Dec. 4, which is International Cheetah Day. ... "Sometimes when they sleep, their little feet move as if they're dreaming," the zoo said in the release.