The nine-banded armadillo (Dasypus novemcinctus) is native to the Americas. Its geographical distribution spans from the southern United States, throughout Central America, and into South America, reaching as far south as northern Argentina. It is commonly found in countries such as the United States, Mexico, Costa Rica, Colombia, Venezuela, and Brazil.

This species typically inhabits diverse environments, including forests, grasslands, and semi-deserts. The nine-banded armadillo prefers areas with loose, sandy or clay soils that facilitate digging and burrowing. It is generally found in regions with warm climates, as it has low metabolic and temperature-regulating capabilities.

Dasypus novemcinctus plays a crucial role in its ecosystem as both a forager and a soil engineer. It primarily feeds on insects, including ants and termites, but its diet can also include small vertebrates, plants, and carrion. The armadillo's burrowing behavior aerates the soil, promotes plant growth, and creates habitats for other species. Its ecological niche involves ground-level foraging and soil modification, and it is adapted to a nocturnal lifestyle to avoid the heat of the day.