Cougars are solitary animals rarely seen in the wild, but on Saturday, five people were attacked by one on a trail in Washington. No one died, but at least one of the cyclists was hospitalized.

The cougar's death set off a debate between tribes in the Los Angeles area and wildlife officials over whether scientists could keep samples of the animal's remains for future testing and research.

Beloved Hollywood mountain lion P-22 was euthanized over the weekend due to health issues. His story highlights both the plight of urban wildlife and groundbreaking efforts to protect it.

For years, the wild mountain lion's presence in LA captured the adoration of the city's residents. Wildlife officials said they "compassionately euthanized" the ailing animal on Saturday.

P-22 has lived in Griffith Park for a decade, earning nicknames like the "Hollywood Cat" and the "Brad Pitt of mountain lions." He is undergoing health evaluations after exhibiting signs of distress.

Erin Wilson recounts how her dog saved her from a mountain lion attack while she hiked along a river in remote Northern California. Eva the Belgian Malinois is recovering.