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(Tachyglossidae), a family of oviparous mammals. There are two genera, consisting of the true, or shortbeaked, echidnas (Tachyglossus), with two species—the Australian (T. aculeatus) and Tasmanian (T. setosus) echidnas—and the New Guinea, or long-beaked, echidnas comprising three species. The best known is the Australian short-beaked echidna. The echidna’s body, attaining a length of 50 cm, is thickset, and its back is covered with spines. Its legs are short and thick, with strong claws adapted for digging. The rear legs have spurs, particularly well developed in males, which are connected with a poisonous gland by an internal duct. The tail is extremely short.

Echidnas possess a number of primitive characteristics: they lack teeth, and the female’s oviducts lead into a cloaca. Body temperature fluctuates between 22°C and 37°C, depending on the ambient temperature. In contrast to most mammals, which give birth to live young, the female echidna usually lays a single egg and carries it in a pouch on the abdomen. The developed offspring breaks the eggshell with an egg tooth, which then falls off. The young feeds by licking the thick excretion of the tubular milk glands. When the offspring begins to develop spines on its body (having attained a length of 8-9 cm), it leaves the mother’s pouch and hides in a small burrow dug by the mother. Echidnas live in thick underbrush, feeding on ants, termites, worms, and other invertebrates, which they extract with a long tongue covered with sticky saliva. The echidna is a nocturnal animal.


Zhizn’ zhivotnykh, vol. 6. Moscow, 1971.


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Echidnas don't need to bury fridges, but soil turnover and nutrient mixing keep ecosystems humming along.
Paying attention to the weather or climate is not the same as paying attention to the habits of echidnas or honeyeaters.
Instead, that concept is overwhelmingly usually acquired either through ostension, or (perhaps the more common way) through reference-borrowing: through hearing someone talk about echidnas, watching TV shows about echidnas, reading books about echidnas and so on.
Ten days after the egg is laid, the young echidna uses die egg tooth on its snout to break through the egg.
A short time later I noticed two echidnas about 5 m away.
Washington, Jan 12 (ANI): A new study has unlocked some surprising traits of the echidnas.
Two long-beaked Echidnas, a primitive egg-laying mammal, simply let scientists pick them up and bring them back to camp to be studied.
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According to the 2009 International Union for Conservation of Nature (IUCN) Red List data, 36 are critically endangered, 49 endangered, 365 considered vulnerable and 288 near threatened (DEC 2010) iii in PNG which includes tree kangaroos, echidnas, forest wallabies, leather back turtles, dugong, among others.
Captain Kangaroo in coat and cap takes off with his animal passengers, complete with heavy travel bags, soon after the ground crew of echidnas check out the plane.
The linking of this fossil to the platypus lineage would have meant that platypuses and echidnas diverged more than 112.
Two long-beaked echidnas - primitive egg-laying mammals - let the scientists pick them up and carry them off for study.