Should we try to prevent other animals from
killing and eating each other?
If we attempted to do this, it would result in an ecological disaster. It is necessary for animals such as lions to hunt in order for an ecological balance to be maintained. If all lions stopped hunting, it would be extremely detrimental to many of the species in the area, including the prey species itself. The harm done from the resulting ecological catastrophe would far outweigh any good which may have been done by saving a few gazelle from being eaten by lions.
Follow up questions:
Isn't hunting by humans necessary to prevent deer overpopulation?
If everyone becomes a vegetarian, then what will we do with all the farm animals?
Why should we behave better towards animals than they do towards each other?
Why is it ok for lions to eat meat, but not ok for humans?