The goat is a hoofed mammal that's been domesticated by humans for thousands of years. Goats are known for their curiosity, agility, and willingness to eat almost anything (including, according to cartoons, tin cans, though they don't actually prefer metal for dinner). Farmers raise goats for their milk, meat, and wool. Goats are remarkably sure-footed animals that can climb steep mountainsides and even trees, using their split hooves and strong sense of balance to navigate terrain that would stop most other animals.

In sports, GOAT is an acronym meaning “Greatest Of All Time.” When fans debate who's the GOAT of basketball or soccer, they're arguing about who deserves to be called the best player in the sport's entire history. Muhammad Ali called himself “The Greatest,” and modern athletes from Michael Jordan to Serena Williams have earned the GOAT title from their fans. The acronym became popular in the 1990s and spread across all kinds of competitions. You might hear someone say their grandmother makes the GOAT chocolate chip cookies, meaning no one else's compare.

The expression get my goat means something annoys or irritates you. If your little brother gets your goat by hiding your favorite book, he's managed to bother you. The phrase's origin is uncertain, though some believe it comes from horse racing, where a goat companion kept racehorses calm.