"Outstanding . . . Emlen's book on animal warfare reveals a world far more fascinating and intriguing than one we could summon with our imagination." -The Seattle Times

Every animal relies on a weapon of some kind-cats have claws, eagles have talons, even the dogs we keep as pets have a respectable set of teeth. In rare cases, we find species whose weapons have become stunningly outsized, some with tusks so massive that those who wield them look like they should collapse under the weight. In Animal Weapons, biologist Douglas Emlen pulls readers into the worlds...