Kayla Goes to College in Her Yellow Keppie Hat by Susan D. Stein  
 
This is the second book in the Nicki and Kayla series.

In this story, Nicki’s sister, Kayla, a cute sable-colored cock-a-
poo dog, loves to go for rides in the car. When one of the
children, Lauren, goes to college for the first time, the family
takes a road trip; and Kayla comes along wearing her yellow
keppie hat.

This story was inspired by actual events from Kayla, Susan’s
cock-a-poo dog.