Animalia (2007)

Animalia tells the story of two human children, Alex and his friend Zoe, who stumble into the magical library which transports them to the animal-inhabited world of Animalia. Strange events have undermined the Animalian civilization, and Alex and Zoe join forces with their new friends G'Bubu the gorilla and Iggy the iguana to save Animalia from evil and comical villains.