The simple and straightforward themes of Ginger Pye are exemplified in the three major characters: Rachel, her brother Jerry, and Ginger the dog. Estes convincingly portrays the deep love between the children and their pet. The children's affection for animals extends to their neighbors' pets and contrasts sharply with the bad treatment that Ginger receives at the hands of the villains. This central concern for pets first appears as Jerry wonders if Gracie the Cat would be jealous of a new puppy. His sister and mother reassure him, and the dog and cat establish a satisfactory friendship.

A related theme deals with loyalty, including the children's loyalty to their pets, Ginger's loyalty to the Pyes, and family members' loyalty to one another.

Even though Ginger disappears for many months, the children never stop searching for him or thinking of him.

They refuse to adopt...