The Squirrels hear a strange sound that they can not identify. With Duggee's help they learn all about sound and how to listen for different qualities in the noises they hear. This episode was ...

Duggee starts to explain where comedy comes from - a complete history, but the squirrels don't find this very funny. So, they all have a go at saying what makes them chuckle, from Dr Pluto's Fun facts ...