Sound on 🔊 Field biologists were retrieving trail cameras for a lynx and fisher research project when they were fortunate enough to hear a rare occurrence: the distinct vocalizations of mountain lions echoing through the wilderness. Mountain lions, Puma concolor, are one of the most elusive carnivores across the Americas, but sometimes you might catch a glimpse or hear one of their vocalizations echoing off the Montana mountainside. Felids can either roar or purr depending on the species' vocal