PLANET EARTH Freshwater

As rivers leave the mountains behind, they gradually warm and begin to support more life. Indian rivers are home to the world's most social otter（水獭） - smooth-coated otters form family groups up to 17 strong. Group rubbing not only refreshes their coats, but strengthens social bonds. When it comes to fishing there is real strength in numbers. Fishing practice begins when the cubs are four months old.



Only the adults have the speed and agility needed to make a catch. Adults share their catches with their squabbling cubs（squabble 表示争吵，斗嘴，幼崽没有吃的东西的时候，就会嗷嗷叫，发出争吵的声音，这里可以意译为嗷嗷待哺的）. Most otters are solitary, but these rich warm waters can support large family groups and even bigger predators. Mugger crocodiles（鳄鱼）, four meters long, could easily take a single otter. But, confident in their gangs（一帮，一伙，这里表示这些水獭是社会性的，有组织有纪律）, the otters will actively harass these great reptiles（爬行动物）. Team play wins the day.