" One species of lizard is born with a long tail and large body or a small tail and small body depending on one thing only—whether their mother smelled a lizard-eating snake while pregnant. When her babies are entering a snake-filled world, they are born with a long tail and big body, making them less likely to be snake food. "

― Sharon Moalem , Survival of the Sickest: A Medical Maverick Discovers Why We Need Disease