Stegosaurus had four spikes on its tail called thagomizers. Each thagomizer was two feet long, and two protruded from each side of the end of the tail.

Stegosaurus had four spikes on its tail called thagomizers. Each thagomizer was two feet long, and two protruded from each side of the end of the tail. If attacked, Stegosaurus could quickly pivot on its hind legs in an effort to keep its tail end toward the predator. With one powerful swing of the tail, it could stab the enemy with one or even two of its thagomizers, leaving an agonizing and, in some cases, potentially fatal wound.

Stegosaurus had four spikes on its tail called thagomizers. Each thagomizer was two feet long, and two protruded from each side of the end of the tail. If attacked, Stegosaurus could quickly pivot on its hind legs in an effort to keep its tail end toward the predator. With one powerful swing of the tail, it could stab the enemy with one or even two of its thagomizers, leaving an agonizing and, in some cases, potentially fatal wound. However, even their thagomizers didn't make them invincible, and Stegosaurus were sometimes killed by predators.

Stegosaurus had four spikes on its tail called thagomizers. Each thagomizer was two feet long, and two protruded from each side of the end of the tail. If attacked, Stegosaurus could quickly pivot on its hind legs in an effort to keep its tail end toward the predator. With one powerful swing of the tail, it could stab the enemy with one or even two of its thagomizers, leaving an agonizing and, in some cases, potentially fatal wound. However, even their thagomizers didn't make them invincible, and Stegosaurus were sometimes killed by predators.