I just cycled Vancouver-Whistler return today; no dog, but there are these damn "rumble strips" they have on the side of the road to alert drivers if they drift towards the shoulder of the road. Good idea for drivers, not so good for cyclists as when you are travelling at 70 kmh they are a damn menace!
Concerning that crazy race video from Chilli, I have heard that "favella" (shanty town/slum) bike races in Rio Brazil are the new extreme sports craze...