How do armadillo protect themselves?

Answer 1

Some species of armadillos, such as the three-banded armadillo, protect themselves by rolling up tightly into a ball, which presents only their armour to a woud-be predator. Others dig quickly, vanishing rapidly into a hole in the ground.

After armadillos dig into the ground, they are able to expand the bony shell which encases their body, and wedge themselves firmly into the burrow so that they cannot be dislodged.

Armadillos are faster runners than one would expect. When cornered by a predator, they may use their claws to defend themselves.
its shell on the back
The armadillo has a heavy-duty shell on its entire body to protect it. They can also roll themselves up in their shells to avoid predators.
Underneath the masses of dense armour that doesn't have much of a purpose, they have an armoury of organic firearms.
they roll up in a ball
Armadillos actually curl their self up in to a ball shape so they look like something they're not, this strategy protects them selves from predators.

Answer 2

Armadillo protect themselves by rolling into a ball. Because of their hard shell, predators cannot permeate the ball they roll themselves into.