Numbat

Overview

The Numbat (Myrmecobius fasciatus), affectionately known as the banded anteater, is a petite, strikingly marked insectivorous marsupial belonging to the monotypic family Myrmecobiidae. Strictly endemic to the ancient eucalyptus forests of southwestern Australia, this charismatic evolutionary relic represents the sole surviving member of an ancient lineage that diverged from all other carnivorous dasyuromorph marsupials over 35 million years ago. Instantly recognizable by its rich reddish-brown coat, prominent dark eye stripe, and four to eleven crisp white transverse stripes across its rump, the numbat is proudly celebrated as the official animal emblem of Western Australia.

Operating as a hyper-specialized diurnal predator across Australia’s temperate woodland floors, Myrmecobius fasciatus is an obligate termitivore that consumes an astonishing 20,000 subterranean termites every single day. Uniquely among Australian marsupials, the numbat is strictly diurnal (active only during daylight hours), perfectly synchronizing its foraging activity with the thermal movements of termites through shallow soil tunnels. Tragically devastated by the introduction of predatory red foxes and feral cats, alongside extensive agricultural clearing of native wandoo woodlands, wild numbat populations collapsed to fewer than 1,000 individuals, resulting in an Endangered classification on the IUCN Red List.

Biology and Physical Characteristics

The morphological and physiological adaptations of Myrmecobius fasciatus represent an evolutionary masterpiece of myrmecophagy: its jaws are elongated and slender, containing 50 to 52 small, non-functional, degenerated teeth—more teeth than almost any other terrestrial mammal, yet completely unused for chewing. Instead, the numbat feeds using an extraordinarily long, slender, vermiform (worm-like) tongue that can extend up to ten centimeters (nearly half its body length) beyond its snout. This tongue is coated in viscous, sticky saliva secreted by hypertrophied submandibular salivary glands, allowing the numbat to dart its tongue deep into narrow subterranean galleries to extract clinging termites. Its forelimbs are armed with five sharp, curved digging claws used to scratch through loose topsoil and leaf litter, while its palate is lined with complex transverse ridges that scrape termites off its retracting tongue before swallowing them whole.

Behavior and Ecology

Numbats are strictly solitary, territorial animals that maintain exclusive home ranges of 25 to 50 hectares, actively defended against same-sex rivals through scent marking from a specialized sternal gland located on the chest. Because termites are ectothermic and become sluggish in cold temperatures, the numbat’s daily routine tracks the sun: in summer, it is bimodal (foraging in early morning and late afternoon), while in winter, it forages exclusively during the warmest midday hours. The numbat does not break into rock-hard above-ground termite mounds; instead, it uses its keen olfactory sense to locate shallow, subterranean gallery networks excavated beneath fallen logs and leaf duff. Uniquely among marsupials, female numbats lack a true pouch; when the four tiny joeys are born, they attach directly to four nipples on the mother’s abdomen, sheltered only by a surrounding halo of golden crimped fur.

Conservation and Human Impact

Myrmecobius fasciatus is classified as Endangered on the IUCN Red List, with fewer than 1,500 mature individuals remaining in the wild. The primary existential threat is predation by introduced European red foxes and feral cats, against which the small, ground-foraging numbat has virtually no natural defense. The Western Australian Department of Biodiversity, Conservation and Attractions (DBCA) and the Australian Wildlife Conservancy (AWC) lead comprehensive recovery programs combining intensive fox-baiting regimes (Western Shield), captive breeding at the Perth Zoo, and translocations into predator-free, fenced safe havens such as Scotia Sanctuary and Mount Gibson, successfully establishing flourishing breeding colonies.

Interesting Factoid

The numbat is the only marsupial in Australia that stays awake exclusively during the day, and it has an absurdly long, sticky tongue that can shoot out four inches to slurp up over 20,000 termites every single day.