Can someone explain the meaning of this parable?

"Dog" was a term the jews commonly applied to Gentiles because the Jews considered these pagan people no more likely than dogs to receive God's blessing. Jesus was not degrading the woman by using this term, he was reflecting the Jews attitude so as to contrast it with his own. The woman did not argue. Instead, using Jesus' choice of words, she agreed to be considered a dog as long as she could receive God's blessing for her daughter. Ironically, many jews would lose God's blessing and salvation because they rejected Jesus and many Gentiles would find salvation because they recognized and accepted him.