How did Caligula die?

Answer 1

Then his eccentricities became more murderous. He restored the hated treason trials of his predecessor, executing both rivals and close allies, including the head of the Praetorian Guard, his personal protection squad.

At other times, his cruelty was more random. In one instance, he was about to sacrifice an animal as a sacred offering to the gods. He raised his mallet to kill the animal and brought it down hard. At the last moment, however, he turned and struck a priest standing nearby, who died instantly.