Armadillos are type of enemy in Fur Fighters. They are the only enemy that can shield themselves from gunfire. They can only attack when they open up their shell. While standing still and not seeing you, their shells are open, but they cannot take damage nor do they respond to the bullets. Armadillos use a Heavy Machine Gun, making them a threat and must be taken out quickly. Dealing with two of them can be a problem. They also drop the weapon when killed.
Even though they do not respond to gunfire while idle, they still respond to Rockets, but will not take damage. When blasted with a Rocket (Rocket Launcher only, Seeker Launcher has no effect since they will try to flee from the rocket), they will start shooting in the direction they are facing (and will face you if you're close enough), and you can quickly swap to a better weapon and shoot them while they're open for an attack. This will work even if you're out of their sight range.
Unlike other enemies, even if your gunfire reaches out to them as they remain idle, they will not take damage. You must be within their sight to cause any damage.
Sometimes when defeating an Armadillo, their head will be pushed in front of their shell.
Since the Armadillos lack a swimming animation, dragging them into water causes them to use their walking animation instead.
They can also be killed via Neutron Gun regardless if they are actively blocking bullets or not. Killing them in this matter results in playing a different death animation that has their head pushed through their shell.