To add—Were the cheetah to experience a reciprocity of the pain inflicted upon the gazelle, it would likely make the decision to starve to death instead. However, cheetahs lack the ability to experience this and, thus, continue inflicting suffering without any care for the effects of their actions.
I must be a cheetah, than. Well, at least I look like I just ate a cheetah.
I have no problem chowing down on meat, whether it was killed by myself or someone else.