Armadillo

Armadillo at a glance

Need to know

• Armadillos are the only mammals with a complete hard shell made of bony plates.
• The Nine-banded Armadillo has rapidly expanded its range into the southern United States.
• Giant Armadillos can have up to 100 small teeth—more than any other terrestrial mammal.
• Pink Fairy Armadillos are so elusive that very little is known about their wild populations.
• Some armadillo species (like the Three-banded) can roll into a perfect ball for defense.
• Armadillos are one of only a few animals known to naturally contract and harbor leprosy bacteria.

About the Armadillo

Armadillos are a unique group of burrowing mammals native to the Americas, known for their protective armor made from bony plates covered in tough skin. They range in size from the tiny Pink Fairy Armadillo to the impressive Giant Armadillo, adapting to habitats as diverse as rainforests, grasslands, and even suburban lands. These animals are expert diggers, using strong claws to excavate burrows—both for shelter and searching for insects underground.

Famed for their ability to curl up or leap vertically when threatened, armadillos play an important role in controlling insect populations and aerating soil with their digging activity. Their evolutionary adaptations have enabled them to thrive across Central and South America, and some species are now common in the southern United States. However, habitat loss, hunting, and climate change threaten vulnerable species, while some—like the Nine-banded Armadillo—continue to expand their range.

Physical characteristics

Size: 13–150 cm (5–59 in) depending on species. Weight: 0.12–60 kg (0.25–132 lbs), species dependent. Lifespan: Average 10 years in the wild; up to 20 years in captivity.

• Bony flexible shell (carapace)
• Strong, clawed forefeet for digging
• Long, tubular snout with whiskers
• Small to large ears (tubular in some species)
• Tail covered in bands or armor

Notable species

• Nine-banded Armadillo (Dasypus novemcinctus) — Least Concern. Varied—grasslands, forests, scrub, even suburban areas Regions: Southern United States, Mexico, Central America, Northern Argentina, Brazil, Paraguay, Bolivia.
• Giant Armadillo (Priodontes maximus) — Vulnerable. Tropical rainforests, flooded grasslands, savannas Regions: Amazon Rainforest, Pantanal, Guiana Shield, Brazil, Venezuela.
• Pink Fairy Armadillo (Chlamyphorus truncatus) — Data Deficient. Dry grasslands and sandy plains Regions: Central Argentina, Mendoza Province, La Pampa Province, San Luis Province.
• Southern Three-banded Armadillo (Tolypeutes matacus) — Near Threatened. Dry forests (Chaco), savanna Regions: Bolivia, Paraguay, Northern Argentina, Gran Chaco.
• Six-banded Armadillo (Euphractus sexcinctus) — Least Concern. Savanna, grassland, lightly wooded areas Regions: Eastern Brazil, Bolivia, Northern Argentina, Paraguay, Uruguay.
• Greater Long-nosed Armadillo (Dasypus kappleri) — Least Concern. Tropical lowland rainforest Regions: Amazon Rainforest, Colombia, Ecuador, Peru, Venezuela, Northern Brazil.

Habitat and range

Original range: Subtropical and tropical regions of Central and South America

Current distribution: Southern United States through Central America, most of South America, with wide expansion in some species and severe local declines in others

Preferred environments: Tropical and subtropical forests, Grasslands, Savanna, Scrubland, Dry temperate plains, Occasionally semi-arid or suburban environments

Regions: Southern United States, Mexico, Central America, Northern Argentina, Brazil, Paraguay, Bolivia, Uruguay, Guiana Shield, Amazon Rainforest, Pantanal

Where to see Armadillo

• Pantanal, Brazil — May–September (dry season). Giant and Six-banded Armadillos may be seen at night near forest edges.
• Everglades National Park, USA — Year-round. Best to spot Nine-banded Armadillos at dawn or dusk along trails.
• Gran Chaco, Paraguay — June–August. Seek Three-banded Armadillos in open woodlands after rains.
• La Pampa, Argentina — September–November. Rare chance to glimpse Pink Fairy Armadillos in sandy soils at night.

Behavior and diet

Diet: Primarily insectivorous—mainly ants, termites, beetles, grubs, but also plants, fruit, eggs, and small vertebrates in some species.

Social structure: Mostly solitary; contact mainly during mating season or when females raise young (typically 1–4 offspring per year).

Communication: Limited vocalizations; rely mainly on scent marking and some body postures. Young may emit soft squeaks or grunts.

• Dig complex burrow networks for sleeping, rearing young, and escape from predators.
• Jump nearly vertically (up to 1.2m) when startled—especially Nine-banded Armadillos.
• Three-banded Armadillos roll into a near-perfect ball to shield vulnerable undersides.
• Some species can float or sink by inflating or deflating intestines for crossing water.

Interactions with other animals

• Jaguar (predator): Armadillos are preyed upon by large carnivores like jaguars in Central and South America.
• Insects (ants, termites) (prey): Insect populations are controlled naturally by insectivorous armadillos, especially in tropical regions.
• Humans (predator/competitive): Humans hunt armadillos for meat and shells, but also create habitat competition through land use.
• Leprosy bacterium (Mycobacterium leprae) (host): Armadillos can act as a reservoir host for the bacteria that causes leprosy in humans.

Conservation

IUCN Red List status: Species-dependent; Least Concern to Vulnerable

Threats

• Habitat destruction and fragmentation
• Hunting for meat and for traditional medicine
• Vehicle collisions
• Wildfires
• Climate change

Conservation efforts

• Protected areas and wildlife reserves (e.g., Pantanal, Cerrado)
• Anti-poaching patrols
• Ecological monitoring using camera traps and radio-telemetry
• Education and outreach programs

How to help

• Support rainforest and grassland conservation organizations
• Reduce vehicle speed in known armadillo ranges to prevent roadkill
• Advocate for sustainable farming and anti-deforestation policies
• Participate in citizen science and wildlife monitoring projects
• Educate others about armadillo conservation needs

Armadillo facts for kids

Armadillos are unusual mammals that wear tough, bony shells like armor! They love to dig and eat ants, and some can even roll into a ball to hide from danger. You might find Nine-banded Armadillos in backyards in the southern U.S. or see pictures of the super-cute Pink Fairy Armadillo from Argentina.

• Armadillos can dig very fast with their strong claws.
• Only the Three-banded Armadillo can roll up completely into a ball.
• Some armadillos like to take mud baths to cool off.
• Armadillos usually have four babies at a time—and they're all identical!
• They can sleep up to 16 hours every day!

Did you know? Did you know that armadillos can walk underwater to cross streams and rivers? They hold their breath and tiptoe across the bottom!

Watch & learn

• The Amazingly Armored Armadillo — National Geographic Wild. This documentary takes an in-depth look at the armadillo’s extraordinary armor and unique burrowing behaviors in their native habitats, featuring stunning close-up footage of their daily lives.
• Armadillos: Nature’s Little Tanks — BBC Earth. BBC Earth showcases rare footage of armadillos in the wild, exploring how their natural defenses and peculiar appearance help them survive predators and harsh environments.
• The Life of Armadillos in South America — Smithsonian Channel. Smithsonian Channel delves into the diverse world of armadillos across different ecosystems, highlighting their evolutionary adaptations and their place in the food web.
• Armadillo Adaptations: Surviving Predators — PBS Nature. This PBS Nature feature examines the unique adaptations of armadillos, including their hard shells and digging abilities, with stunning wildlife cinematography and expert commentary.
• The Giant Armadillo: Secrets Beneath the Shell — Nat Geo WILD. Focusing on the elusive giant armadillo species, this documentary offers rare insights into their nocturnal habits and ecological role in South American grasslands.