Each giraffe has a distinct coat pattern made up of irregular patches. No two giraffes have the same pattern, which helps them identify each other.
Giraffes sleep only 4-5 hours a day, often taking short naps while standing up.
A giraffe's heart weighs about 25 pounds and pumps blood all the way up its long neck to its brain.
Giraffes mostly stay quiet but use low-frequency sounds that humans can't hear to communicate, as they communicate using infrasound.
Giraffes have tongues that can be up to 20 inches long. Their bluish-purple tongues help protect them from sunburn as they eat from tall trees.