The Wild Kratts go in search of lions, tigers, and felines of all sizes in this leveled reader with stickers PBS's successful animated show Wild Kratts joins the adventures of zoologists Chris and Martin Kratt as they travel to animal habitats around the globe. Along the way, they encounter incredible creatures while combining science education with fun. Boys and girls ages four to six can learn all about cats--from ferocious big cats like lions and tigers that live in the wild to adorable house cats. Stickers add to the fun. Step 2 readers use basic vocabulary and short sentences to tell simple stories for beginning readers who recognize familiar words and can sound out new words with help.