Rosie is a tiny dog who thinks she is bigger than her actual size. Living with the Mckray family in Mexico, and being the runt of the litter, she proves daily to the family that she is the fastest and bravest dog of them all.

One night while Rosie is sleeping on the porch with her sisters, three coyotes quietly enter the yard and stand in front of the dogs. Frightened, Rosie's sister Pearl decides to run and the coyotes give chase. Now Rosie must summon all the courage within to protect her sister.

In this children's book there is an important message. A little dog with a big personality proves that it's how she sees herself that's more important than how others see her.