Can volume two of Todd Lee Treest's children's series be as good as volume one? In this volume, Treest introduces new characters to join the original ones. The story still focuses on Darby. Yeppers, he's still learning. Pat's Veterinary Hospital continues to stay pretty busy in this installment of Treest's growing series. This time, it's been raining all night and into the next day when the hospital staff meets a special new dog.