Overview
The Short-beaked Echidna (Tachyglossus aculeatus), commonly known as the spiny anteater, is one of only five surviving species of monotremes—the world’s most primitive living mammalian order that lays eggs instead of giving birth to live young. Clothed in a dense coat of sharp quills and equipped with an electroreceptive snout, this ancient Australian survivor thrives in virtually every terrestrial ecosystem across the continent.
Biology and Physical Characteristics
Tachyglossus aculeatus is covered dorsally in thousands of hollow, modified keratin spines interspersed with insulating fur. It possesses a slender, sensitive tubular snout equipped with mechanoreceptors and electroreceptors capable of detecting the faint electrical currents generated by moving underground termites. Lacking teeth entirely, it grinds insects between keratinous spines on the base of its 7-inch (18 cm) sticky, whip-like tongue and the roof of its mouth.
Behavior and Ecology
When threatened, the echidna uses its spade-like claws to rapidly dig vertically into the soil, anchoring itself firmly until only its formidable dome of spiny quills is exposed, or curls into a tight, impenetrable ball if on hard ground. In winter, echidnas undergo deep seasonal torpor or hibernation. During the spring breeding season, up to a dozen males will form a comical single-file ‘echidna train,’ following a female for weeks until she is receptive to mating.
Conservation and Human Impact
Evaluated as Least Concern by the IUCN, the short-beaked echidna is common and ecologically resilient, protected under Australian wildlife law. While wild dogs, feral cats, and foxes occasionally prey on juveniles, the echidna’s primary modern mortality hazards are vehicle collisions on rural highways and severe landscape-scale bushfires.
Interesting Factoid
The echidna is one of only two types of mammals that lay eggs, and its snout contains electroreceptors that allow it to literally ‘feel’ the microscopic electrical impulses of termites crawling underground!
Last updated: October 2026