Source 143: The following quote was written by Paul Raffaele in his article ‘Bonobos: The apes who make love, not war’, 2003; accessed at: http://www.lasttribesonearth.com. This link may or may not still be operational; if it isn't, we may have redirected it to the WayBackMachine archive.
‘up to 100 bonobos at a time from several groups spend their night together. That would not be possible with chimpanzees because there would be brutal fighting between rival groups’
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