Michael Dahl 
Squeals on the Bus [PDF ebook] 

On a morning like any other, a young boy gets on his school bus, but the passengers are anything but ordinary. One student has an extra eye! Another has a tail! And another has lizards for hair! At least his best friend is normal — or is she? Step aboard Michael Dahl’s (LIBRARY OF DOOM and IGOR’S LAB OF FEAR) addictively creepy SCHOOL BUS OF HORRORS, where the final destination is never expected.