You're forgetting that they were in a public park zoo. If they were being 'trained to kill', they would have shown signs of that whilst people were there.
You're forgetting that they weren't.
This was a man keeping lions as pets in his house. Never been to a zoo, never been in the wild. I'm not saying they had to kill them, but chances are there was probably good reason for it. Or it was our loving Governor. He's a loving rooster who needs to be voted out of office. No one here likes him.
Also, for those of you who don't know, this was all perfectly legal, as here in Ohio we don't have any laws preventing you from keeping exotic animals as pets. The only reason this became a problem was because he released them all before killing himself.
