For a younger crowd this book has a great rhythm to the story, using rhymes. Very colorful illustrations as well.

Little Chimp's Big Day by Lisa Schroeder, illustrated by Lisa McCue. Little Chimp is worried - where is Mother? His branch breaks and he goes on a wild adventure through the jungle searching for mother. Finally, they find each other again and curl up for the night. Of course, Mother was safely watching him the whole time, through all his adventures. This is a fun story for toddlers - brisk, bouncy rhyme, lots of action and animals to point out, and the mother chimp to find in each picture