Mark 7:24-30, Matthew 15:21-28, Mark 7:31-37, Matthew 15:29-31, Mark 8:1-10, Matthew 15:32-16:4, Mark 8:11-21, Matthew 16:5-12 (Link)
Have you ever been called a dog? Sure, it would be cool to be able to catch a frisbee with your teeth! But why would Jesus say such a thing? This woman was clinging to Jesus as her only hope. And for her persistence, her prayer was granted.
And what sign were the Pharisees looking for? Feeding 5000 people? Casting out demons? Healing? The religious leaders had no sign to prove their legitimacy. What right did they have to demand one from Jesus?