River otters can live up to 25 years in captivity and 15 years in the wild for more info you can go to www.luddist.com/otter.htm
The Silent Valley of India is in the state of Kerala.
The tributaries of rivers ganga and brahamaputratogether form the ganga-brahamaputra basin.the basin lies in the sub-tropical region that is situated between 10 degree n to 30 degree n latidudes.
This answer is given by..... A super star of silvassa dadra and nagar haveli .