Behavior Lutra canadensis is usually found alone or in pairs, but they often socialize in larger groups. Some are used to strengthen social bonds, to practice hunting techniques, and to scent mark. River otters get their boundless energy from their very high metabolism, which also requires them to eat a great deal during the day. River otters have very large home ranges, between 8-78km of waterway, and they are constantly on the move within this range. Despite these large ranges, river otters are only slightly territorial and generally practice mutual avoidance.
River otters communicate through a wide range of activities.
They vocalize with whistles, growls, chuckles, and screams. Habitat Riparian zones, usually no more than a few hundred meters from water unless they are moving between rivers or lakes. Oxford University Press. Macdonald, Dr. David. The Encyclopedia of Mammals.