![Mountain Lion, aka puma, cougar; Puma concolor, Captive wildlife model, in snow near Yellowstone National Park. - Stock Photo - Dissolve Mountain Lion, aka puma, cougar; Puma concolor, Captive wildlife model, in snow near Yellowstone National Park. - Stock Photo - Dissolve](http://cdn8.dissolve.com/p/D256_57_429/D256_57_429_600.jpg)
Mountain Lion, aka puma, cougar; Puma concolor, Captive wildlife model, in snow near Yellowstone National Park. - Stock Photo - Dissolve
![The Plague Has Been Quietly Killing Yellowstone Cougars for a Decade | Smart News| Smithsonian Magazine The Plague Has Been Quietly Killing Yellowstone Cougars for a Decade | Smart News| Smithsonian Magazine](https://th-thumbnailer.cdn-si-edu.com/LmgEql9Dy6UwbAMU703WXPm77PU=/1000x750/filters:no_upscale()/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/53/2b/532b513f-ee7a-44e4-be65-1e550726eb43/mountain_lion_in_glacier_national_park.jpg)
The Plague Has Been Quietly Killing Yellowstone Cougars for a Decade | Smart News| Smithsonian Magazine
![Mountain Lion, aka puma, cougar; Puma concolor, Captive wildlife model, in snow near Yellowstone NP. Mountain Lion, aka puma, cougar; Puma concolor, Captive wildlife model, in snow near Yellowstone NP.](https://www.imago-images.com/bild/st/0074460550/m.jpg)
Mountain Lion, aka puma, cougar; Puma concolor, Captive wildlife model, in snow near Yellowstone NP.
![Plague is a significant source of mortality in pumas in the Greater Yellowstone Ecosystem - Outbreak News Today Plague is a significant source of mortality in pumas in the Greater Yellowstone Ecosystem - Outbreak News Today](http://outbreaknewstoday.com/wp-content/uploads/2020/04/puma-4190562_640.jpg)