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The North American river otter (Lontra canadensis), also known as the northern river otter and river otter, is a semiaquatic mammal that lives only on the North American continent throughout most of Canada, along the coasts of the United States and its inland waterways. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 ...
Bear trap at Großer Waldstein in Germany A British spring trap set in a wire tunnel for small mammals Live trap with shade cloth to protect animal from heat. Cage traps are designed to catch live animals in a cage. They are usually baited, sometimes with food bait and sometimes with a live "lure" animal. Common baits include cat food and fish.
This traps a layer of air which keeps them dry, warm, and somewhat buoyant under water. Several otter species live in cold waters and have high metabolic rates to help keep them warm. Eurasian otters must eat 15% of their body weight each day, and sea otters 20 to 25%, depending on the temperature. In water as warm as 10 °C (50 °F), an otter ...
In some places, otters are just eating them. West coast states are spending millions to protect their inland waterways from invasive crabs. In some places, otters are just eating them. ...
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Otter 841, California's most ornery sea mammal, has returned to waters off Santa Cruz. Authorities warn surfers and swimmers to steer clear of the creature.
[26] A colony of translocated sea otters near San Nicholas Island is showing population growth after ten years of low numbers. In 1991, only 16 individuals remained out of the original 139 from only a year prior, however, the current population is around 100 otters which follows the trend of other successful sea otter translocations.
Retrospective estimates of worldwide sea-otter numbers before the bulk exploitation of these mammals range from 150,000 to 300,000. [42] Sea otters are "slow breeders, only one sometimes two pups being born at a time" each year, which makes the population vulnerable in conditions of intensive hunting. [43] [44]