The picture above is of the nine-banded armadillo and a typical armadillo. You describe the shape.
Shell.
A lizard can have a bacteria on its body
There shells.
An armadillo.
they use there shells and roll into a ball
it is protected by hard scally back
it has and hard shellIts tail and its shell
hair/fur
The largest armadillo is the giant armadillo of South America. No armadillo is aggressive.
No, an armadillo is a mammal.
The body covering of an armadillo consists of a tough, leathery skin embedded with bony plates called osteoderms. These plates form a protective armor that shields the armadillo from predators and environmental hazards. The outer layer of skin is often covered with coarse hair, and their flexible shell allows for some movement while providing defense. This unique body covering is a key adaptation that helps armadillos survive in their habitats.
A baby (young) armadillo is called a "pup."