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The walrus has an air sac under its throat which acts like a flotation bubble and allows it to bob vertically in the water and sleep. The males possess a large baculum (penis bone), up to 63 cm (25 in) in length, the largest of any land mammal, both in absolute size and relative to body size. [5]
The following are two lists of animals ordered by the size of their nervous ... Walrus: 3,929,000,000^ Estimated ... Brain size; Brain–body mass ratio ...
The walrus has unique tusks which are long upper canines. [28] Pinnipeds range in size from the 1 m (3 ft 3 in) and 45 kg (100 lb) Baikal seal to the 5 m (16 ft) and 3,200 kg (7,100 lb) southern elephant seal. Overall, they tend to be larger than other carnivores. [25]
This giant species was much larger than modern walrus, though like many other extinct walrus species, its upper canines did not develop into long tusks like those of the modern walrus. Pontolis reached more than 4 m (13 ft) in body length, [ 4 ] rivaling the extant southern elephant seal as the largest pinniped [ 5 ] and member of the order ...
The heaviest land mammal is the African bush elephant, which has a weight of up to 10.1 t (11.1 short tons).It measures 10–13 ft at the shoulder and consumes around 230 kg (500 lb) of vegetation a day.
Walrus ivory, also known as morse, [1] comes from two modified upper canines of a walrus. The tusks grow throughout life and may, in the Pacific walrus, attain a length of one metre. [ 2 ] Walrus teeth are commercially carved and traded; the average walrus tooth has a rounded, irregular peg shape and is approximately 5 cm in length.
Thor is a male walrus at least three years old [4] and estimated to weigh around 0.75 tonnes. [ 3 ] Thor was originally sighted on 6 November 2022, first in Petten , North Holland , then Neeltje Jans island , Zeeland , [ 5 ] and subsequently travelled along the north coast of France to Brittany .
A bull southern elephant seal is about 40% heavier than a male northern elephant seal (Mirounga angustirostris), which is nearly twice the weight of a male walrus (Odobenus rosmarus), [6] [7] or 6–7 times heavier than the largest living mostly terrestrial carnivorans, the Kodiak bear and the polar bear.