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Everything seemed to be fine on this day at the circus. Excited families looked on while a trainer was working with the lions.

The crowd cheered and laughed as the show went on. That was until the act went horribly wrong.

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According to LiveLeak, one of the lions ran after the trainer and attacked him. The crowd began to scream and panic, some even rushed their children out of the area.

Others in the cage came to the aid of the trainer. But too little, too late. The trainer died two days later at the hospital from complications from the attack.

This should serve as a reminder as to why wild animals should not be held in captivity.