Armadillos were born to dig. With their eyesight as poor as it is they can't catch anything that can see them coming. Once while doing field work in Texas in which I had to sit out along some irrigation canals early in the mroning, one came up and actually bumped into my seat. I said something to it and it shot straight up in the air, what seemed like a couple feet up off the ground. Like DogsandDirt said.... quite humorous.
I don't think it ever did "see" me.