In my neighborhood when I was a kid, there was a dog that lived three doors down from us that loved to chase kids on bicycles. He was so notorious that many neighborhood kids would take the long way around the block just to avoid him. The dog in this video loves to chase bikes. He loves to chase mountain bikes up and down the trails and beyond. It's incredible just how fast this little guy is and it's even more amazing to see him catch big air over the jumps just like the biker. I don't know if this dog was trained to do this or if he just really doesn't like bicycles. Regardless it makes for a pretty darn amazing video if you ask me. My dog, he would probably just sleep through the entire ride and be ready for a bowl of water when I got back.