Eating a bug

I hear Waldo chomping away behind me and I just know, JUST KNOW he's eating a bug. So I call him over and he's chomping away and this black round thing falls out of his mouth. What is it? A roly poly bug. And believe it or not, it was still alive. Yeck! It was trying to walk around but with Nestle hovering about it just kept rolling back into a ball.