Audio version of web page: https://www.animal-ethics.org/wild-animal-suffering-matters/population-dynamics-animal-suffering/

The reproductive strategy that is overwhelmingly prevalent in the wild  consists of having huge numbers of offspring of which the vast majority  die not long after coming into existence. This is the main cause of wild  animal suffering, as it means most animals in nature have little time  for enjoying positive experiences and often die in ways that involve  significant suffering (such as starvation, dehydration, cold or being  eaten alive). In this way, population dynamics suggest that suffering  prevails over happiness in nature.