In his travels across time and space, the Doctor has met hundreds of monsters - now, he's created this handy spotter's guide to the biggest, smallest, tallest, hungriest, smelliest and most dangerous creatures in the Whoniverse!

In this fantastic companion guide to How To Be A Time Lord, the Twelfth Doctor reveals, in tips and doodles, everything you need to know about each dangerous monster, advice for battling them and how and when to make a speedy escape.