There are two related videos in this posting about animal communication:
The Sound of Fear (60:06) Dr. Dan Blumstein, Professor and Chair Department of Ecology and Evolutionary Biology at UCLA presents a Darwin Evolving Lecture in which he discusses and presents examples of the alarm sounds in marmots and other animals.
Alarm Sound - Prairie Dogs (5:00) It's a beautiful summer day in America's Savanna for the prairie dog when suddenly an alarm sounds as danger nears. (From "America's Savana," Season 5 - Animal Planet
Right now I am watching "Americas' Savanna"-it has always been one of my favorite wildlife documentaries/films. Prairie Dogs fascinate me-their language is SO intriguing! If anyone is interested, there was also an episode from Season 9 called "Prairie Dog Chatter" which was also very informative.
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