Pumpkin Gets a Haircut (paperback)

The Backstory of   "Pumpkin Gets a Haircut":   I grew up on a farm  south of Gering, Nebraska.  One day, when I was in high school, a stray wandered into our farmyard.  We already had another dog named Toby, and a cat named Buttercup, but Pumpkin fit right in and soon became part of our family.    A few days later my mom took him to the dog groomer to get a haircut,  but when he came back home he looked so different my sister and I weren't sure if he was the same dog!
In this story, our cat Buttercup becomes jealous of the attention Pumpkin is getting, and decides to follow him to the dog groomer to find out what goes on there.
He peeks in the window, looks in the door, and even uses bionoculars to spy on Pumpkin.  When Pumpkin comes home, Buttercup continues his new detective skills to find out if it is really Pumpkin.  On the last page, we learn that Buttercup has continued his detective work and has become famous!