Wild animal suffering is suffering experienced by non-human animals living in the wild, outside of direct human control, due to natural processes. Its sources include disease, injury, parasitism, starvation, malnutrition, dehydration, weather conditions, natural disasters, killings by other animals, and psychological stress.[1][2] An extensive amount of natural suffering has been described as an unavoidable consequence of Darwinian evolution,[3] as well as the pervasiveness of reproductive strategies, which favor producing large numbers of offspring, with a low amount of parental care and of which only a small number survive to adulthood, the rest dying in painful ways, has led some to argue that suffering dominates happiness in nature.[1][4][5] Some estimates suggest that the total population of wild animals, excluding nematodes but including arthropods, may be vastly greater than the number of animals killed by humans each year. This figure is estimated to be between 10¹⁸ and 10²¹ individuals.[6]
The topic has historically been discussed in the context of the philosophy of religion as an instance of the problem of evil.[7] More recently, starting in the 19th century, a number of writers have considered the subject from a secular standpoint as a general moral issue, that humans might be able to help prevent.[8] There is considerable disagreement around taking such action, as many believe that human interventions in nature should not take place because of practicality,[9] valuing ecological preservation over the well-being and interests of individual animals,[10] considering any obligation to reduce wild animal suffering implied by animal rights to be absurd,[11] or viewing nature as an idyllic place where happiness is widespread.[4] Some argue that such interventions would be an example of human hubris, or playing God, and use examples of how human interventions, for other reasons, have unintentionally caused harm.[12] Others, including animal rights writers, have defended variants of a laissez-faire position, which argues that humans should not harm wild animals but that humans should not intervene to reduce natural harms that they experience.[13][14]
Advocates of such interventions argue that animal rights and welfare positions imply an obligation to help animals suffering in the wild due to natural processes. Some assert that refusing to help animals in situations where humans would consider it wrong not to help humans is an example of speciesism.[2] Others argue that humans intervene in nature constantly—sometimes in very substantial ways—for their own interests and to further environmentalist goals.[15] Human responsibility for enhancing existing natural harms has also been cited as a reason for intervention.[16] Some advocates argue that humans already successfully help animals in the wild, such as vaccinating and healing injured and sick animals, rescuing animals in fires and other natural disasters, feeding hungry animals, providing thirsty animals with water, and caring for orphaned animals.[17] They also assert that although wide-scale interventions may not be possible with our current level of understanding, they could become feasible in the future with improved knowledge and technologies.[18][19] For these reasons, they argue it is important to raise awareness about the issue of wild animal suffering, spread the idea that humans should help animals suffering in these situations, and encourage research into effective measures, which can be taken in the future to reduce the suffering of these individuals, without causing greater harms.[4][15]