This Is Why Ninjas Carried Crickets
Ninjas used some pretty unconventional items to help them remain silent, sneaky, and deadly. Though not a weapon exactly, ninjas often carried a small box of crickets to mask the sound of their footsteps. Along with that, they would have a special mixture of chemicals to induce chirping from the crickets when needed. Other "weapons" included colored rice-ninjas would pass along secret information with special rice colored to mean different things.
Key Facts In This Video
Ninjas are said to have told time by looking at a cat's eyes—the pupils are narrower at midday and wider at dusk. (0:04)
Ninjas often carried a small box of crickets—the chirping disguised any stray sound the ninjas made. (1:26)
Ninjas would pass along secret information by using different colored rice. (1:46)