Susan Wilson

The very definition of a hard-nosed businessman, Adam March has no room in his life for anything but the cold drive to succeed. Not for his social-climbing wife or for his rebellious teenage daughter. then, in an instant, he loses everything, and Adam finds himself alone, unemployed, and reduced to bussing tables in a homeless shelter. Then he meets a dog.

Rick Stanton was a promising professional baseball player with dreams of playing in the major leagues and starting a family with his young wife, Francesca, when World War II changed everything. Rick returns from the war with his body broken and his dreams shattered. But it was not just body and spirit he sacrificed for the war. He and Francesca volunteered their beloved dog, Pax, for the Army's K-9 Corp, not knowing if they'd ever see him again.
Keller

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A grief-stricken Boston K-9 unit policeman turned animal-control officer struggles to rescue a traumatized dog gone feral at the same time he is challenged to prove that his delinquent older brother has returned to the drug business.