No, but they will perform infanticide, with boars killing and eating young piglets, or even sows eating their own young if something's not right with the young (or if something's not right with the sow!) But normally, wild pigs or wild boar will not eat other wild boar.
If your talking about the wild boar then no it is not designed by man. The wild boar is a real animal if u type it on google images u will see that it is in fact an animal. (I dont know about any other boars so i just thought it was a wild boar.)