Two Bonobos or Pygmy Chimpanzees (Pan paniscus), delousing each other in an enclosure

adult an animal animals ape apes big bonobo bonobos chimp chimpanzee chimpanzees chimps common day daylight daytime de de louse de louses de lousing delouse delouses delousing during each enclosure exterior exteriors fauna great hominidae hominoidea hygiene in kingdom lice louse louses lousing mammal mammalia mammalian mammalians mammals monkey monkeys nature nobody or other outdoor pan paniscus personal photo photos primate primates pygmy remove removes removing robust shot shots tetrapod the troglodytes two two vertebrata vertebrate vertebrates wild wildlife world