Animal carnivores... Wtf

So, Ive been thinking about animals eating each other... In my opinion, its not amuzing at all and it angers me to the point where i want to put a stop to it if thats ever possible, first we have to stop eating animals as a human race... Why do animals continue to eat each other?????? Better yet WHY THE HECK do they do it in the first place??? Does it have anything to do with human instigation?