All right? He was perplexed by the sexual swellings of certain primates, including chimps and bonobos, because these sexual swellings tend to provoke many males to mate with the females.
Ele ficou perplexo com os inchaços sexuais  de certos primatas, incluindo chimpanzés e bonobos, porque esses inchaços sexuais  tendem a provocar muitos machos a copular com as fêmeas.