Animal weapons: the evolution of battle

Extremes

Starting small. Camouflage and armor ; Teeth and claws ; Claspers, graspers, and giant jaws

Triggering the race. Competition ; Economic defensibility ; Duels

Running its course. Costs ; Reliable signals ; Deterrence ; Sneaks and cheats ; End of the race

Parallels. Castles of sand and stone ; Ships, planes, and states ; Mass destruction.