Book excerpt: Life is beautiful, ruthless, and very, very strange. In the evolutionary arms race that has raged on since life began, organisms have developed an endless variety of survival strategies. From sharp claws to brute strength, camouflage to venom—all these tools and abilities share one purpose: to keep their bearer alive long enough to reproduce, helping the species avoid extinction. Every living thing on this planet has developed a time-tested arsenal of weapons and defenses. Some of these weapons and defenses, however, are decidedly more unusual than others. In Strange Survivors, biologist Oné R. Pagán takes us on a tour of the improbable, the ingenious, and the just plain bizarre ways that creatures fight for life. Inside this funny, fascinating field guide to nature’s most colorful characters, you’ll meet killer snails, social bacteria, and an animal with toxic elbows. But Strange Survivors is more than a collection of curiosities—it is a love letter to science and an argument for the continuing relevance of this evolutionary battle as we face the threat of resistant bacteria and the need for novel medical therapies. Whether discussing blood-thinning bats and electric fish or pondering the power of cooperation, Pagán reveals the surprising lessons found in some of life’s natural oddities and how the tactics they employ to live might aid our own survival.