This brother-and-sister pair, known as P-59 and P-60, have beautiful blue eyes.
The National Park Service just discovered the kittens in the central portion of the mountain range.
Their mother is P-53 -- she's only two years old herself and this is her first litter.
Video of P-53 was shot in 2015 when she was just a baby.
As for the father, researchers aren't quite sure which male mountain lion it may be, but if they had to guess, it would be P-12, known to have fathered many kittens.