sentence: River otters are a distant relative of the weasel family.
sentences_after: North American river otters can reach a length of 3.9 ft and weigh 3 lbs. The river otter's life expectancy is 10 to 15 years in the wild and 25 years in captivity. The main habitat of the river otter are near freshwater rivers, streams, lakes, ponds, marshes, swamps, and coastal waters.
concept_name: river otter
headings: North American river otter
categories: Mustelids Mammals of North America