When Pa Peachey comes home in a happy-go-lucky mood--and singing!--the family is concerned. Pa has never not been grumpy after work! But when Ma and siblings Ava and Ollie learn that Pa has gotten a new job--which means moving to an appealing new house--they are all pretty quick to get on board. Even McTavish the dog is excited to make a canine pal in the new park nearby. Only the youngest sibling, Betty, remains out of sorts--nervous about changing schools, making friends, and leaving behind the house where she and McTavish grew up. But McTavish, with his special canine senses--and his vow, as a "rescue dog," to save the family whenever need arises--knows how to help Betty regain her confidence and feel at home again. With tenderness and gentle humor, the Peachey family returns in McTavish on the Move, the fourth book in Meg Rosoff's charming series about beloved dog McTavish and his family.