- Indian rivers are home to the world's most social otter -
印度河里住着世界上最具社会性的水獭 - smooth-coated otters form family groups up to 17 strong.
印度水獭的一个家族可多达17名成员 - Group rubbing not only refreshes their coats,
集体“按摩”不仅能清洁它们的皮毛 - but strengthens social bonds.
也能增强群体内部团结 - When it comes to fishing
当它们去捕鱼时 - there is real strength in numbers.
群体合作能保证它们屡战屡胜 - Fishing practice begins when the cubs are four months old.
小水獭在4个月大时就开始学习捕鱼