Cows can get aggressive and attack people if they are feeling threatened. Cows are listed among the top 11 animals most likely to kill you, even more likely than rattlesnakes, spiders and horses.
The reason a cow's attack is so dangerous is because of its size and power. On average, adult cows weigh over 1,000 pounds and measure more than five feet tall. They also have sharp hooves and horns and are extremely powerful when they are aggressive.
Due to cows traveling in herds, cow attacks are often the result of multiple cows attacking. To escape a cow attack, remain calm but move swiftly away from the herd. If there is another threat in the area, such as a predator, move away from the perceived threat.