Callie Barkley loves animals. As a young girl, she dreamed of getting a cat or dog of her own until she discovered she was allergic to most of them. It was around this time that she realized the world was full of all kinds of critters that could use some love. She now lives with her husband and two kids in Connecticut. They share their home with exactly ten fish and a very active ant farm.

Marsha Riti illustrated the picture book The Picky Little Witch by Elizabeth Brokamp and The Critter Club series by Callie Barkley. She lives in Austin, Texas, where she likes to take long walks, stopping frequently to pet neighborhood kitties.