Bethany has an amazing secret - her hamster, Hammy, is the cleverest hamster you will ever meet.
He loves to learn everything that Bethany and her little brother do at school - and when they bring back a big brass trombone, Hammy can't wait to have a go!
But little hamsters should be careful about making too much noise - especially ones as special as Hammy - because you never know who might be listening...