The notion that meat is causing everybody to become fat is preposterous, I eat a great many creatures of every conceivable sort and yet I am svelte and lean. The great shamans of old realised the principle that if one eats an animal, one gains the powers of that animal. From the cow, we gain patience and calm. From the flesh of a fish, one may become a keen swimmer. From eating ants, we become at one with our fellow man, and gain diligence and strength beyond our wildest dreams. Also with time, one may gain the ability to follow pheremone trails left by ants. I have been experimenting with this procedure for quite some time, and am becoming an expert at absorbing the powers of the animals which I am able to conquer and eat.
As a life-form with the power of abstract reasoning and investigations of the truth, it seems moral for me to absorb other animals into me so that they may do better service to the truth than they can without the power of reason. Don't think of it as the animal dying, think of it assuming a new body which has more powerful sentience than before!