Ape years ago (Mya) the clades diverged into newer clades. The lesser apes are the gibbon family, Hylobatidae, of sixteen species; all are native to Asia. Their major differentiating characteristic is their long arms, which they use to brachiate through trees. Their wrists are ball and socket joints as an evolutionary adaptation to their arboreal lifestyle. Generally smaller than the African apes, the largest gibbon, the siamang, weighs up to ; in comparison, the smallest "great ape", the bonobo, is . Formerly, all the great apes except humans were classified as the family Pongidae, which conveniently provided for separating the human
Killer ape theory Pierre Boulle’s novel of the same title, but the content is almost similar to the topic. This theory can be seen in the opening sequence of "", and also appears in the television show "Sliders", which made extensive use of the killer ape theory in storyline arcs involving the Kromaggs. (The names of "Dart" and "Ardrey" were combined by the professor Arturo character in the series into ""Drayer"" who purportedly came up with his world's "killer ape theory".) Killer ape theory The killer ape theory or killer ape hypothesis is the theory that war and interpersonal aggression was the driving