Rex goes on an intergalactic guinea pig rescue mission in his next adventure in the hilarious series for 7+ readers, from Lollies Prize winning author-illustrator Elys Dolan.

Life is going well for Rex until the school's guinea pigs suddenly vanish from the pet show. As a dinosaur-turned-PE teacher, Rex immediately gets the blame.

Determined to prove he hasn't eaten any beloved pets, Rex – along with his friends Sandra, Anish and Bigfoot – set out to solve the guinea pig mystery.

First they have to face up to the shifty city mayor, Jimmy Prigg, and then Rex must go undercover on a daring intergalactic rescue mission.