"Even in prehistoric times, a pet is a boy's best friend and a bully, his worst enemy...There's abundant drollery in both Elliott's terse text and Nichols' mischievous pictures...Wacky and well-tuned to the preschool sense of humor." —Kirkus Reviews
"Elliott's halting cave-speak and Nichols's expressive cartooning make for some very funny scenes..." —Publishers Weekly
"Rich in humor....(r)ecommended for all collections." —School Library Journal
"Fun ...Nichols' affectionate cartoon drawings, with dynamic compositions and expressive faces, add to the humor and heart." —Booklist