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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.
The giant otter has a handful of other names. In Brazil it is known as ariranha, from the Tupi word arerãîa, or onça-d'água, meaning water jaguar. [6] In Spanish, river wolf (Spanish: lobo de río) and water dog (Spanish: perro de agua) are used occasionally (though the latter also refers to several different animals) and may have been more common in the reports of explorers in the 19th ...
Satherium is an extinct genus of otters that lived in North America during the Pliocene and Pleistocene. Two species are known, Satherium piscinarium and Satherium ingens. S. piscinarium was originally classified as a species of Lutra. The giant otter of South America is considered the closest living relative of this genus. [3]
The giant otter is less of a generalist in habitat, preferring slow-moving water and overhanging vegetation, but where the Neotropical otter may also occur. The giant otter is much larger and hunts in groups, so it can take larger prey. Some areas, like the Pantanal, have high enough productivity such that both otter species can coexist with ...
Sea otters can also bite sea urchins and mussels open using their strong jaws and teeth. Adults can crush most of their food items but youngsters have not yet developed powerful enough jaws. Therefore, young otters require the assistance of a tool or stone. Tools may also be used when the molluscs are too large to be crushed in the jaws. [14] [15]
A giant river otter was spotted in the El Impenetrable National Park in northeast Argentina on May 16, where it was previously thought to have been locally extinct, according to the Rewilding ...
Diet: Crabs and catfish, as well as insects and tadpoles [51] VU Unknown [51] Ruwenzori otter shrew. M. ruwenzorii (de Witte, Frechkop, 1955) Central Africa: Size: 12–20 cm (5–8 in) long, plus 10–15 cm (4–6 in) tail [52] Habitat: Forest and inland wetlands [53] Diet: Insect larvae and worms, as well as small fish, frogs, and crabs [52] LC
Most have sharp claws on their feet and all except the sea otter have long, muscular tails. The 13 species range in adult size from 0.6 to 1.8 m (2.0 to 5.9 ft) in length and 1 to 45 kg (2.2 to 99.2 lb) in weight. The Asian small-clawed otter is the smallest otter species and the giant otter and sea otter are the largest.