Young readers with big dogs or younger sibs will easily relate, though in contrast to the moodier, bright red dino in Bob Shea’s Dinosaur vs. series, this one is a good-natured sort, invariably smiling toothily as he romps and stomps through Vaisberg’s minimally detailed, two-toned indoor and outdoor settings, created digitally but with a look that blends watercolor and printmaking…A bright, buoyant addition to both the "giant pet" and "new sibling" genres.
The text is well written and easy to read, but it’s the illustrations that provide the amusing surprises. The red and blue color scheme works surprisingly well in directing the eye to the humorous elements. A delightful story that’s bound to work well as a read-aloud and be popular in most collections.
—School Library Journal