Heard about the fish that clean shark teeth? Or the frog that lives with a tarantula? Welcome to the weird world of symbiosis - where animals form incredible relationships.Macken Murphy introduces his favourite symbiotic relationships in his first kids' non-fiction book. Along the way he explains the cool science behind the baffling behaviour of some animals - from friendly alliances to pesky parasites. You'll even find out about symbiotic relationships including YOU! (Hint - is your head ever itchy?) By the end of the book you won't look at nature in the same way again!