The Secret Life of the Dog is a BBC Horizon production that reveals new research regarding dogs and the bond dogs have with humans. It's a six-part video which is definately fascinating and well produced. I do however get a little bit weird or should I say nervous when something as beautiful and innocent as dogs are scientifically studied, but that's just me. One of the segments has a story about a border collie named Betsy that knows 340 words! Check out the first segment below on YouTube.