LOS ANGELES, CALIFORNIA (REUTERS) - Five newborn mountain lions have been discovered in the mountains just outside of Los Angeles. A video of the kittens and one of their mothers was taken in June by the US National Park Service.

The kittens are part of two litters in the eastern Santa Susana Mountains. The first litter, two females, was tagged on June 8 and are now known as P-48 and P-49. Their mother, P-35, is an approximately six-year-old female that the National Park Service has been tracking since April 2014.

The second litter belongs to P-39, a five-year-old female researchers began tracking in April 2015. Her cubs include two males, P-50 and P-52, and one female, P-51.

Researchers located the newborns by analysing GPS locations transmitted from collars attached to their mothers.