German biologist and journalist Jörg Zittlau is already known to Russian readers from such books as “The Ideal Diet for 4 Blood Types” and “Oddities of Evolution. Fascinating biology." His new work continues to acquaint us with incidents, or, as the author himself says, mistakes of nature made during evolution. Did you know that seals and whales do not distinguish the color blue, and swans fall in love with pedal boats? A luxurious mane brings nothing but trouble to lions, and moose go to a nursing home? Is our biosphere really as ideal as we think? And who is man really - the crown of evolution or a mistake of nature? This book contains fascinating and vivid material: a whole collection of misunderstandings and mistakes of nature that influenced the course of evolution and made the world what it is.