The Princess and the Wolf (The Hound Saga #5)

King George and Queen Marit have lived sixteen years after the mysterious disappearance of their daughter Princess Ina. While they continue to look for her, they have adopted Dagmar as their heir and she is betrothed to Lord Morlieb, from a neighboring kingdom. But the king's horse and other animals have become wild and feral, attacking villagers, and there is a strange wolf in the forest near the castle who looks like he has lived for a thousand years. Soon, the tolerance for animal magickers that King George has spent his whole reign to protect is gone and only Princess Dagmar can save it.