mountain lion kitten
First documented litter of kittens found in the Simi Hills

National Park Service

P-66: First Litter Straight Outta Simi Hills

Female | Born June 2018 | Status Unknown

Researchers discovered a litter of four-week old mountain lion kittens in Simi Hills in June 2018. All four kittens are female and are known as P-66, P-67, P-68 and P-69. The mother is P-62 who researchers have been tracking since January 2018.

Biologists visited the den site while she was away on June 11, 2018, locating it after several previous attemps failed because radio telemetry showed that she was still at the den with her kittens. This is the first kitten den researchers have documented in the Simi HIls. The kittens were found on the 2,668-acre Santa Susana Field Laboratory site, with the cooperation of Boeing.

The kittens weighed between four and five ounds and were around four and a half weeks of age.

Last updated: October 20, 2020

Contact the Park

Mailing Address:

26876 Mulholland Highway
Calabasas, CA 91302


(805) 370-2301

Contact Us