P-53 didn't look like her usual self when researchers observed her through remote camera images. Her fur was scruffy, making her face look swollen, and her eyes were squinted nearly shut. She has mange, a parasitic skin disease that causes crusting and skin lesions, the researchers determined. Jeff Sikich, a biologist studying the mountain lions, quickly recaptured P-53 and treated her, before releasing her back into the wild. Now, researchers are waiting to see how she will react to the treatment, said Kate Kuykendall, a spokeswoman for the National Park Service.