D is for Dog - The Dog Finders, #1

Blackie, a Labrador Retriever, is the light of Rodrigo's life, his best friend. But when Blackie falls ill and the veterinarian can no longer help the dog, his master takes him on a road trip through Spain, searching for healing. Along the way, they find a young woman from Morocco who becomes their friend. And Blackie's master learns lessons about the meaning of life.