The animals must fight for limited resources and breed as ... Occasionally, either the male or female may stray and mate with a stranger. For now, researchers are stumped as to why.

Lions mate after dominance fights, with males leading and protecting females. Photo Credit: Pexels Peacocks display their vibrant tail feathers to attract mates, with females preferring larger ...

As wild populations shrink, the remaining males have smaller mating pools ... Herders also castrate their domestic animals to keep them from fighting with other animals in the herd or attacking ...