Max the Missing Puppy by Holly Webb

"Molly is over the moon when she is given Max, a gorgeous Old English sheepdog puppy. Max pines for Molly when she's at school, and longs for her to come home and play, so when he spies an open window one day he sets off to find her. But the world is a scary place for a puppy on his own, and soon Max is lost and in danger. Will he ever be reunited with Molly?"--Page 2 of cover