A pack of stray dogs entered the Kansas City Zoo and attacked a herd of gazelles, killing six of the animals.
Two of the four strays were shot to death and a third was caught with a net before the zoo opened Thursday. The fourth dog ran into nearby woods. Zoo officials feared the dogs would attack more animals.
"It's an unfortunate thing," zoo director Randy Wisthoff said. "We have done a walk of the entire zoo, and we still haven't been able to figure out where the dogs came in."
The zoo's eight living gazelles will be housed indoors until zoo staff can guarantee their habitat is secure.