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The eastern long-beaked echidna can be distinguished from other members of the genus by the number of claws on the fore and hind feet: it has five claws on its fore feet and four on its hind feet. Its weight varies from 5 to 10 kilograms (11 to 22 lb); its body length ranges from 60 to 100 centimetres (24 to 39 in); it has no tail.
Echidnas and platypuses are the only egg-laying mammals, the monotremes. The average lifespan of an echidna in the wild is estimated at 14–16 years. Fully grown females can weigh about 4.5 kilograms (9.9 lb), the males 33% larger, at about 6 kilograms (13 lb). [12]
Peak weight Height Peak BMI kg/m 2 Notes Lifespan (age at death) kg lb st Jon Brower Minnoch United States: M 650 kg 1,430 lb 102 st 5 lb 1.85 m 6 ft 1 in 186 Largest ever documented weight loss, of 419 kg (924 lb; 66 st), [1] until Khalid bin Mohsen Shaari surpassed the record in 2017. 1941–1983 (41) Khalid bin Mohsen Shaari [2] Saudi Arabia: M
The long-beaked echidna's limb posture is sprawled, similar to extant reptiles like lizards and crocodilians. Although the stances between the animal groups are similar, the way the limbs move are very different between the clades. The echidna swings its limbs at a 45 degree angle while a lizard's is more horizontal.
Murrayglossus is an extinct echidna from the Pleistocene of Western Australia.It contains a single species, Murrayglossus hacketti, also called Hackett's giant echidna.Though only from a few bones, researchers suggest that Murrayglossus was the largest monotreme to have ever lived, measuring around 1 metre (3.3 ft) long and weighing around 20–30 kilograms (44–66 lb).
The weight of the type specimen when it was alive was estimated to be 2 to 3 kilograms (4.4 to 6.6 lb). [5] The male is larger than the female, further differentiated by the spurs on its hind legs. [ dubious – discuss ] The species has five claws on each foot like the eastern long-beaked echidna , and has short, very fine and dense fur ...
The western long-beaked echidna is an egg-laying mammal. Unlike the short-beaked echidna, which eats ants and termites, the long-beaked species eats earthworms.The long-beaked echidna is also larger than the short-beaked species, reaching up to 16.5 kilograms (36 lb); the snout is longer and turns downward; and the spines are almost indistinguishable from the long fur.
Short-beaked echidnas are typically 30 to 45 cm (12 to 18 in) in length, with 75 mm (3 in) of snout, and weigh between 2 and 7 kg (4.4 and 15.4 lb). [23] However, the Tasmanian subspecies, T. a. setosus , is smaller than its Australian mainland counterparts. [ 24 ]