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The marine otter (''Lontra felina'') is a rare and poorly known South American mammal of the weasel family (Mustelidae). The scientific name means "otter cat", and in Spanish, the marine otter is also often referred to as : "marine cat". The marine otter spends much of its time out of the water and rarely ventures into freshwater or estuarine habitats, unlike the almost fully aquatic sea otter (''Enhydra lutris'') of the northeast Pacific and most other otter species. == Description == Marine otters are relatively small, and among otters, only the oriental small-clawed otter is smaller. Lengths range from , not counting the tail of . Weights can range from .〔() (2011).〕 Their fur is dark brown on the back and light brown on belly. The guard hairs cover short insulating fur with a grayish color. The fur is coarser and tougher than in sea otters. The front and hind paws are webbed, and there are four teats. The marine otter's lower jaws contain eight pairs of teeth, and the upper jaws eight or nine pairs. The teeth are developed for slicing rather than crushing. Sexual dimorphism in this species not readily apparent. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「marine otter」の詳細全文を読む スポンサード リンク
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