Mark Elbroch

I’ve lost track of how many times I’ve been told that mountain lions target male mule deer (“bucks”) and, to a lesser extent, male elk (“bulls”). I remember one exchange in which a ranch hand in Colorado told me that if I walked out into the nearby sagebrush, I’d stumble upon buck carcasses just about…

Changing Planet

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Please Note: This is the first of two blogs about a research paper published today in Science Advances providing the first evidence of complex social strategies in any solitary carnivore—and showing that mountain lions in particular are more social than previously thought. Part Two will chronicle how territorial males structure social interactions among mountain lions….

Changing Planet

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I grew up catching animals of all sorts. I kept buckets full of jumping spiders, turtles and snakes. At five-years-old, under the careful instruction of my grandfather, I miraculously caught a rabbit in a flimsy butterfly net attached to the end of a bamboo shoot. After parading it proudly about the house, I released it…

Changing Planet

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Contrary to popular belief, mountain lions are not all the same. They are as distinctive in personality as we are. Some are bold, others stick to the shadows. Some are social, others avoid interactions. Some hunt elk, some prefer smaller fare. Some are productive, successful mothers that rear numerous kittens to young adults, and others…

Changing Planet

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The “Secret Life of Mountain Lions” provides an intimate glimpse into the family lives of mountain lions. This true story follows F61, an adult female mountain lion, and one litter of kittens. Mountain lions have long been considered anti-social creatures, but this remarkable short film reveals a family that is playful, affectionate and interdependent, even…

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F61 and F51, adult female mountain lions (Puma concolor), also called cougars, followed by Panthera’s Teton Cougar Project were both four years old when they gave birth to their first litters of kittens within a month of each other in 2011. The pair of big cats were neighbors in adjacent and overlapping home ranges in…

Changing Planet

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