Dog action starts at 4:13
This reminds me of a shark special where the researchers made a motorized mannequin to test a theory. Whenever another animal starts to run away from a predator, it triggers a hunting instinct, even if the prey is larger than the hunter. Conversely, some animals in the wild are quite dangerous, even though they may be very small. As a result, predators are surprised and confused when a smaller animal turns on it, and just to be safe, they often retreat as a prudent caution.
The shark guys chumed the water to draw a bunch of big sharks, one big shark began slowly circling the mannequin in a common investigative pattern (each loop slightly closer) which usually ended with the shark taking a bite out of the victim, and then pulling back to see the reaction. In this case, the mannequin turned towards the shark, and began advancing towards it. The shark immediately backed off.
You can't outswim a shark, so I think its worth a try...