The Wasp that Brainwashed the Caterpillar by Matt Simon

The Wasp That Brainwashed the Caterpillar: Evolution's Most Unbelievable Solutions to Life's Biggest Problems - Matt Simon

An interesting and amusingly written book that highlights some of the strange survival mechanisms that animals have evolved.  There is nothing technical in this book.  Each chapter takes a look at a specific animal. 

For a more in-depth look at some of these survival mechanisms, I recommend the book "Venomous" by Christie Wilcox.