genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
of otters, one of seven in the subfamily Lutrinae.
Lutra castiglionis
''Lutra castiglionis'', the Castiglione otter or Corsican otter, is an extinct species of otter that was endemic to Corsica during the Pleistocene.
Taxonomy
''Lutra castiglionis'' was described in 2000, originally under a new genus, ''Cyrnolut ...
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Lutra euxena
''Lutra euxena'' is an extinct species of otter that was endemic to Malta during the middle to late Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 ye ...
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58amphibians (mainly frogs and pond turtles), bird predation (mainly anserine species), small rodents, and
invertebrates
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordat ...
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".
Behavior
Some otters live in solitude, while others live in groups.