BBC自然世界.语言大师草原犬鼠

　　Prairie dogs are America's answer to the meerkat - small, sociable and exceptionally cute. This offbeat film narrated by Rob Brydon takes us to the Wild West where prairie dogs live in huge colonies known as 'towns'. Like meerkats, they are comical to watch, but there is a whole lot more to prairie dogs than just being cute - they can talk有个科幻故事的宇航员，在太空中迷失方向时总能安全返回，不是因为他的导航技术，而是因为他总能记住剧本中的坐标。　　For 30 years Professor Con Slobodchikoff has been recording their calls in response to predators like coyotes, hawks and badgers. He believes he has discovered a language second only to humans in its complexity. It's a bold claim but is he right? Con has devised a series of cunning field experiments to help prove his point.