Attack Mode
It does not take a lot to provoke a dog when it is terrified. Sometimes, they will attack you if they think that you are way too close. The sad truth is that the dogs only react this way to keep themselves safe from something that they perceive to be a threat.
Bribery
The pair did bring a cheeseburger with them to make it easier. They planned to use the food as a bait to get the dog out of her hiding spot. It is not that different from a fisherman using bait to attract fish!