Echoes to Bugles: Stories of Colorado Mammals examines the natural history of 24 mammals treated as 12 pairs of two very different but very connected animals. Each month features a different pair and presents both the details of their separate lives as individuals and of their inseparable lives as predator and prey. August 12 - Trouble on the Tundra A big fuzzball just wants to munch wildflowers and sprawl out to catch some sun, but relaxing could mean missing an eerie eagle sneaking in from above or a pesky puma coming in from behind. If not them, it could be the worst of all: a creepy Coyote. Sometimes, for a marmot, life on the tundra is nothing but trouble.