Billy is on a school trip to the zoo to learn about endangered animals... but his Mini Monsters are causing chaos. Another laugh-out-loud monster adventure in the Billy and the Mini Monsters chapter book series, perfect for newly independent readers aged 6+ and fans of Claude and Horrid Henry. Another laugh-out-loud FULL COLOUR monster adventure in the Billy and the Mini Monsters chapter book series, perfect for newly independent readers aged 6+ and fans of Claude and Horrid Henry.Billy and his best friend, Ash, are on a school trip to the zoo to learn all about endangered animals. But when they arrive, the Mini Monsters can't wait to explore. Soon there's trouble in the tiger enclosure, Gloop's been kidnapped by a monkey and the whole class is in for a REPTILE SURPRISE!Packed with colour illustrations, comic strips, maps and speech bubbles, with an action-packed plot, to appeal to even the most reluctant reader.Collect all the books in the Billy and the Mini Monsters series!1. Billy and the Mini Monsters: Monsters in the Dark2. Billy and the Mini Monsters: Monsters go to School3. Billy and the Mini Monsters: Monsters go Swimming4. Billy and the Mini Monsters: Monsters on a Plane5. Billy and the Mini Monsters: Monsters go to a Party6. Billy and the Mini Monsters: Monsters Move House7. Billy and the Mini Monsters: Monsters on a School Trip8. Billy and the Mini Monsters: Monsters at the Seaside9. Billy and the Mini Monsters: Monsters at Halloween10. Billy and the Mini Monsters: Monsters Go Camping11. Billy and the Mini Monsters: Go Green12. Billy and the Mini Monsters: Monsters at Christmas13. Billy and the Mini Monsters: Monsters go to Hospital14. Billy and the Mini Monsters: Monsters on a Sleepover15. Billy and the Mini Monsters: Monsters at the Zoo