Two Mountain Lions Die With Rat Poison in Systems

5th large cats to die since July

By Keldine Hull

National Park Service (NPS) officials confirmed on Tuesday that two GPS tracked mountain lions, P-30 and P-53, were recently found dead in the Santa Monica Mountains. According to NPS biologists, P-30, a healthy six- year old mountain lion, died from anticoagulant rodenticide poisoning.

“On September 9, biologists hiked into Topanga State Park to look for P-30 after his radio collar sent out a mortality signal. He was found dead with no obvious signs of injury or trauma,” NPS said in a statement. “His carcass was collected and a necropsy by the California Animal Health & Food Safety (CAHFS) Laboratory field office in San Bernardino revealed that he bled to death internally. The report documented that he had severe hemorrhaging in his brain and abdominal cavity. Approximately five liters of unclotted blood was found in his abdomen.”

P-53, a four- year old female mountain lion, was too decomposed by the time biologists found her body on August 15 in Malibu to determine a cause of death. Testing, however, identified compounds of anticoagulant rodenticide in her liver.

“Just about every mountain lion we’ve tested throughout our study has had exposure to these poisons, generally multiple compounds and often at high levels”

Seth Riley, Santa Monica Mountains National Recreation Area Wildlife Branch Chief

“Just about every mountain lion we’ve tested throughout our study has had exposure to these poisons, generally multiple compounds and often at high levels,” said ecologist and Wildlife Branch Chief for the Santa Monica Mountains National Recreation Area (SMMNRA) Seth Riley in a statement. “A wide range of predators can be exposed to these toxicants – everything from hawks and owls to bobcats, coyotes, foxes, and mountain lions. Even if they don’t die directly from the anticoagulant effects, our research has shown that bobcats, for example, are suffering significant immune system impacts.”

News of P-30 and P-53’s death comes months after the loss of other large cats in the NPS study. P-38, a male mountain lion, died from a gunshot wound to the head in early July. P-61, a four- year old mountain lion, was struck and killed by a vehicle while attempting to cross the 405 freeway in September. B-363, an adult male bobcat caught earlier this year, was killed by a vehicle on Kanan Road last month.

According to the NPS, the recent deaths highlight the potentially deadly obstacles mountain lions face in the Santa Monica Mountains and surrounding areas.

Related Posts

Sen. Ben Allen Highlights Challenges, Economic Gains for LA28 Olympics

July 12, 2025

July 12, 2025

The remarks came during the first informational hearing of the Senate’s Special Committee on International Sporting Events State Sen. Ben...

Downtown Santa Monica CEO Andrew Thomas to Step Down

July 12, 2025

July 12, 2025

Thomas, who rejoined DTSM, Inc. in 2022, oversaw the introduction of a private security program, expanded homeless outreach, and boosted...

Mayor Bass Issues Directive to Protect Immigrant Communities

July 12, 2025

July 12, 2025

The order expands access to city resources for affected families and requests records from ICE, including details on arrests Mayor...

USC Initiative Seeks Fire Recovery Stories from LA County Residents

July 11, 2025

July 11, 2025

Two community listening sessions are planned: one on July 19 from 9 a.m. to 1 p.m. at KCRW Headquarters in...

County Supervisors Move to Preserve Measure J Amid Charter Error

July 11, 2025

July 11, 2025

Measure J mandates that at least 10% of the county’s locally generated, unrestricted funds be allocated to community investments like...

Pepperdine Announces 2025-2026 Arts Season with Diverse Lineup

July 11, 2025

July 11, 2025

The lineup includes a mix of dance, music, theater, and art exhibitions across the Malibu campus Pepperdine University’s Lisa Smith...

(Video) Summer Camp at School of Rock West LA Turns Kids Into Rockstars

July 11, 2025

July 11, 2025

To Sign Up Now, Go To Schoolofrock.com Summer Camp at School of Rock West LA Turns Kids Into Rockstars. To...

L.A. Louver Marks David Hockney’s 88th with Exhibit

July 11, 2025

July 11, 2025

Hockney, a British artist born in 1937, gained fame with the British Pop Art movement and later became known for...

California Seizes $476 Million in Illegal Cannabis

July 11, 2025

July 11, 2025

The operation, described as UCETF’s largest to date, involved support from multiple state agencies The state confiscated $476 million worth...

TONIGHT: Theatre Palisades Debuts Disney’s Descendants Musical

July 10, 2025

July 10, 2025

The plot centers on a struggle to choose between a wicked legacy or a path to goodness A stage adaptation...

Angelini Grill Opens Limited Run at Peninsula Beverly Hills

July 10, 2025

July 10, 2025

The menu includes tableside Dover Sole, lobster salad, and a signature pasta tasting A new culinary collaboration, Angelini Grill, launched...

The Bar at Century Plaza to Celebrate National Caviar Day with Exclusive Tastings

July 10, 2025

July 10, 2025

The seven-hour event will feature exclusive caviar tastings and champagne pairings The Bar at Fairmont Century Plaza will host a...

Father-Daughter Authors to Host Book Signing to Aid Fire-Affected Women

July 10, 2025

July 10, 2025

Ten percent of proceeds from book and art sales will benefit the Pacific Palisades Rebuilding Fund, a nonprofit initiative created...

Metro Reports Crime Drop, Higher Rider Satisfaction, and Progress on Major Projects

July 9, 2025

July 9, 2025

The Authority said the drop in violent incidents—down to the lowest level since May 2019—coincided with more uniformed personnel and...

Over $100M Allocated for Affordable Housing in Wildfire Recovery

July 9, 2025

July 9, 2025

Applications for the first phase of funding open July 21 with a deadline of August 21 at 4 p.m. Six...

Comments
Leave a Reply