Wild animals can not be held responsible for being animals. When my child was born I had a dog, sweet doesn't begin to describe. Still not even for a minute were they left alone together. Animals are unpredictable.
The idiot that stuck body parts into the cage is at fault. The power of love has little to do with reality. Reality is that a lion eats when he is hungry, he may be as tame as a mouse when he isn't hungry but when he is hungry, all bets are off.
