Southern Long-nosed Armadillo

Is a small, armored mammal characterized by its flexible, ossified carapace. This protective shield features six to eight movable bands across its midsection, a slender head terminating in a long, conical snout, and notably large, pointed ears that measure roughly one-third of the head´s total length. Its overall coloration is a combination of brownish-gray and yellowish-brown, with a softer, pale gray or pinkish underbelly sparsely covered in bristly hairs. The dorsal carapace remains largely hairless. Adults typically measure between 10 to 12 inches (25 to 30 centimeters) in head-body length, with a tail of 6 to 7.5 inches (15 to 19 centimeters), and weigh between 3.3 to 5.5 pounds (1.5 to 2.5 kilograms). Its limbs are short and powerful, with the forelimbs bearing four robust claws designed for rapid digging, while the hindlimbs have five toes with shorter nails.

Geographical distribution: Occurs widely across the south-central region of South America. Its geographic range encompasses almost the entirety of Uruguay, southern Brazil (primarily restricted to the state of Rio Grande do Sul), southern and eastern Paraguay, and the central and northern areas of Argentina, specifically throughout the Pampean biogeographical province, the humid Chaco, and parts of Mesopotamia.

Habitat: Prefers temperate grasslands, shrubby steppes, open savannas, and agricultural pastures. It shows a strong affinity for soft, sandy, or loamy soils that allow for easy burrowing. While it can tolerate a moderate degree of human-induced disturbance, such as livestock grazing fields and low-intensity crop areas, it actively avoids dense, closed-canopy forests and extremely rocky or flood-prone terrain.

Feeding: Is primarily an insectivorous and myrmecophagous generalist, displaying high ecological specialization. Its diet consists mainly of ants and termites, supplemented by a wide variety of beetles, coleopteran larvae, caterpillars, spiders, crickets, and other soil invertebrates detected using its highly developed sense of smell. It may occasionally consume plant matter, including tender roots, tubers, and fallen fruits, as well as small vertebrates, carrion, or eggs of ground-nesting birds.

Behavior: Exhibits mostly diurnal and crepuscular activity patterns, though it may shift to strictly nocturnal behavior during the hot summer months of the austral region to avoid thermal stress. It is an exceptionally skilled digger, constructing intricate burrow systems with multiple entrances and inner chambers used for predator avoidance, thermoregulation, and resting. When threatened, it runs swiftly toward the nearest burrow or presses its body flat against the ground, digging its claws in to prevent predators from flipping it over.

Reproduction: Features a highly specialized reproductive strategy known as obligate monozygotic polyembryony, a biological process where a single fertilized egg splits to produce multiple genetically identical embryos. Following a gestation period of roughly 120 days (which often includes delayed implantation of the blastocyst), the female gives birth to a uniform litter of 6 to 12 identical offspring, all of the same sex. Parturition and lactation occur during the austral spring, typically from September to December, within the protection of the maternal burrow.

Conservation status: Listed as Near Threatened (NT) on the IUCN Red List. The primary threats facing this species are habitat loss, fragmentation, and degradation driven by intensive agricultural expansion and livestock farming. Additionally, it faces significant pressure from illegal hunting for its meat and predation or harassment by domestic and feral dogs in rural areas.