"What happens in wildlife is indeed of moral concern, according to utilitarianism. When there is famine among the antelopes, the utilitarian sees a problem. It is as bad when wild animals suffer from natural causes, as it is when they are treated badly in the food industry. To the moral rights theorist ... it is not a moral problem when the wolf kills the lamb. It is a problem from the point of view of utilitarianism, however. If there is anything one can do about it, one should not hesitate to do it."
January 1, 1970
https://en.wikiquote.org/wiki/Wild_animal_suffering