Otter, Michael Leach, pp. 4, The Rosen Publishing Group, 2008, ISBN 978-1-4358-4993-8, ... Otters are semiaquatic members of the weasel family. They live on coasts, and beside rivers, lakes and marshes. There are 13 species of otter alive today. They live on every continent, apart from Australia and Antarctica ...
California marine life, Marty Snyderman, Marcor Publishers, 1988, ISBN 978-0-932248-07-7, ... Lacking a fat layer to assist in maintaining their 100° F body temperature, young otters often consume up to 35% of their body weight in a day's feeding in order to combat the effects of cold water. Adults eat closer to 15% of their weight ...
