Zeta, a 20-year-old horse that was shot with an arrow, was able to survive death with the help of four horses that licked its wound. "They kept the wound clean, which would have prevented it from being infected by bacteria. It also helped to stem the blood flow. ... There was definitely a herd instinct kicking in among the horses. They knew Zeta was in need, and they rallied round to save her," the U.K. horse's owner said.
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