What is an idiom? It's a turn of phrase designed to convey a meaning which is different from the literal meaning of the words. But this is a fun take on the subject. Artist and writer Steve Palin has combined another of his passions: his love of animals, birds and insects - to come up with a delightful book in which he has illustrated and explained his favourite wildlife idioms. Cat among the pigeons, big fish in a small pond, a kangaroo court - these idioms have inspired some of his joyous paintings in this book, each paired with his short explanation of how the term came to be used.