My pup, a 4-year-old black lab, is obsessive about lights. It was caused by playing with a laser pointer (those things are of the devil and should not be messed with), but he gets obsessive about anything remotely laser like. So any sort of reflection of light or light itself makes this dude crazy. He goes batshit when you pick up anything shiny or glass, and he eats fireflies like some sort of horrible monster.
I'm watching the news footage of Tahrir Square right now, and he just started crying and prancing around the TV.