Shocking footage from Senegal in 2013 shows a group of chimpanzees brutally attacking and cannibalising a previously respected member of their group.
Whilst there's plenty of footage out there of chimpanzees - one of our closest relatives in the animal kingdom - being cute, this shocking footage shows the brutal reality of what these wild animals can be capable of.
Captured in Senegal in 2013, the footage shows what happened when a group of chimps turned on one of their number - an alpha male named Foudouko who had led the group of around 30 chimps until 2007 before being driven out by a group of younger males.
After spending five years in exile from the group, Foudouko met a grisly end in 2013, as researchers discovered his dead body covered in bite and scratch marks - suggesting that he had been held down and beaten by chimps of the group he used to lead.
The researchers then observed Foudouko's body being cannibalised by his former group. In the gruesome attacks they ripped out his throat and bit his genitals.
Whilst chimpanzees are known to be violent, this incident surprised researchers because of the chimps' former ties. Anthropologist Michael Wilson said: 'Intra-group killing looks like it’s really about reproductive competition, males killing other males. The signals of reproductive competition are really quite abundant; the killings are just an extreme point.'