Cerberus (myths and etymology)

I hope this does not come off as geeky, but I am a big fan of Greek mythology. I found this meme recently on the internet and I thought it was so good that I had to share it, even though I am not sure about its accuracy. Anyway, it is about Cerberus, the hound of Hades (I need to blog about the Greek God of Death one day, by the way) and the watchdog of his kingdom. Anyway, whether it's true or not, mythology is certainly not boring.