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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 needs to catch 100 g (3.5 oz) of fish per hour to survive.
Quizlet was founded in 2005 by Andrew Sutherland as a studying tool to aid in memorization for his French class, which he claimed to have "aced". [ 6 ] [ 7 ] [ 8 ] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [ 9 ]
Adult North American river otters are capable of consuming 1 to 1.5 kilograms (2.2 to 3.3 lb) of fish per day. [35] A study conducted on captive otters revealed they preferred larger fish, ranging from 15 to 17 centimeters (5.9 to 6.7 in), more than smaller fish, ranging from 8 to 10 centimeters (3.1 to 3.9 in), and they had difficulty catching ...
The Erie Zoo on Tuesday unveiled a newly updated otter exhibit which gives otters Mimi and Max three times the space with new amenities.
Rosa was adopted by the Monterey Bay Aquarium in 1999 and served as surrogate mother for a record 15 otters. She outlived the life expectancy for wild southern sea otters.
The sea otter propels itself underwater by moving the rear end of its body, including its tail and hind feet, up and down, [38] and is capable of speeds of up to 9 kilometres per hour (5.6 mph). [6] When underwater, its body is long and streamlined, with the short forelimbs pressed closely against the chest. [46]
To study more complex systems such as motor learning, object recognition, short term memory and working memory, often primates such as the macaque monkey are used because of their large brains and more sophisticated intelligence. [33] Small rodents can be used to study aversive conditioning and emotional memory, and contextual/spatial memory. [34]
Sea otter conservation began in the early 20th century, when the sea otter was nearly extinct due to large-scale commercial hunting. The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern Japan to Alaska to Mexico. By 1911, hunting for the animal's luxurious fur had reduced the sea otter population to fewer ...