The Ghost and the Darkness (1996) starring Hank Pym, Batman,

One of the most impressive parts of the real life story that was depicted in the movie was the idea of using a train carriage to capture the lions. While one was a captured, the men that were there failed to shot at close range due the lion being a complete frenzy and leaving the man scared. The lion's roar was so loud that it left some of the hunters deaf.