Recently started dating a girl whose favorite animal is the armadillo. I want to learn about them so I can seem cool to her! Help me out!
That is very random. Armadillos have a leathery armour shell and they are mammals.
Right, that makes sense. That's pretty basic. Anything more specific, or historical, or something?
Armadillo
Armadillos (from Spanish "little armoured one") are New World placental mammals in the order Cingulata. The Chlamyphoridae and Dasypodidae are the only surviving families in the order, which is part of the superorder Xenarthra, along with the anteaters and sloths. Nine extinct genera and 21 extant species of armadillo have been described, some of which are distinguished by the number of bands on their armour. All species are native to the Americas, where they inhabit a variety of different environments. 
Armadillos are characterized by a
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