River Otter Lutra canadensis River Otter Tracks Natural History of River Otters River otters are playful members of the weasel family who love to frolic in the water. They are common in rivers and are a joy to watch.
Otters can remain submerged for several minutes.
They have valved ears and noses to keep water out. The fur is warm and thick. Since they spend a significant amount of time in the water, their tracks aren't often found. The best places to look for tracks are muddy river banks. They have five toes on the front feet and five toes on the hind feet.