What are some of the things we come to know about otters from this text?

Otters belong to a comparatively small group of animals called Mustellines, shared by the badger, mongoose, weasel, stoat, mink and others. Maxwell’s otter was of a race previously unknown to science and was at length named by zoologists Lutrogale perspicillata maxwelli or Maxwell’s otter. They are found in large numbers in marshes.

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