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Fischotter Lutra lutra1.jpg
Eurasian otter (Lutra lutra)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Mustelidae
Subfamily: Lutrinae
Genus: Lutra
Brisson, 1762
Type species
Mustela lutra
Linnaeus, 1758
Lutra ranges.png
Range of Lutra lutra (brown), Lutra sumatrana (green)

Lutra is a genus of otters, one of seven in the subfamily Lutrinae.

Taxonomy and evolution[edit]

The genus includes these species:

Extant species[edit]

Image Scientific name Common name Distribution
Fischotter, Lutra Lutra.JPG L. lutra Eurasian otter coasts of Europe, many parts of Asia, and parts of northern Africa
Otter from Cambodia.jpg L. sumatrana Hairy-nosed otter Southeast Asia

Extinct species[edit]

Image Scientific name Common name Distribution
Japanese otter.jpg L. nippon Japanese otter Japan

The genus most likely evolved in Asia during the late Pliocene epoch;[1] the oldest fossil belonging to the genus is of the species L. palaeindica, and dates from the late Pliocene.[2]


Lutra species are semiaquatic mammals, so they are well-adapted to both water and land. They prefer shallow, narrow areas of streams surrounded by mature trees and with rocks, especially where weirs reduce the flow of the water, as well as attract fishes. They seem to tolerate roads and residential and agricultural areas, but only moderate human interaction. They clearly avoid areas without vegetation cover and rocks.[3]


The otters' diets consist mainly of fish (hence, the aquatic environment). However, during the winter and in colder environments, fish consumption is significantly lower and the otters use other resources for their food supply. Their diets can consist of amphibians (mainly frogs and pond turtles), bird predation (mainly anserine species), small rodents, and invertebrates such as water beetles, snails, and crayfish. They have also feed on plants, specifically grasses. With this large diversity of prey and resources for their diets, otters are considered "opportunistic eaters".[4]


Some otters live in solitude, while others live in groups.


  1. ^ Koepfli, K.-P.; et al. (2008). "Multigene phylogeny of the Mustelidae: Resolving relationships, tempo and biogeographic history of a mammalian adaptive radiation". BMC Biology. 6 (10): 10. doi:10.1186/1741-7007-6-10. PMC 2276185. PMID 18275614.
  2. ^ Larivière, S. (2002). "Lutra maculicollis". Mammalian Species. 712: Number 712: pp. 1–6. doi:10.1644/1545-1410(2002)712<0001:LM>2.0.CO;2. S2CID 198968980.
  3. ^ Cho, Hee-Sun; Choi, Kwang-Hee; Lee, Sang-Don; Park, Young-Seuk (2009). "Characterizing habitat preference of Eurasian river otter (Lutra lutra) in streams using a self-organizing map". Limnology. 10 (3): 203. doi:10.1007/s10201-009-0275-7. S2CID 20000248.
  4. ^ Lanszki, József; Molnár, M. & Molnár, T. (2006). "Factors affecting the predation of otter (Lutra lutra) on European pond turtle (Emys orbicularis)". Journal of Zoology. 270 (2): 219. doi:10.1111/j.1469-7998.2006.00132.x.