4 books in series

Wild Kratts: Step into Reading

Wild Kratts: Step into Reading is a 4-book series with 4 primary works first released in 2014 with contributions by Chris Kratt and Martin Kratt.

Wild Sea Creatures: Sharks, Whales and Dolphins!
Wild Animal Babies!
Wild Predators
Wild Reptiles: Snakes, Crocodiles, Lizards, and Turtles