Science News, March 2012 (Photo: Simon Allen, SBDRA)
The male dolphins of Shark Bay, Australia, are known to marine biologists for their messy social entanglements. Their relationships with each other are so unusual—they’re more like the intricate webs of the Mafia than the vertical hierarchies of chimpanzees
https://news.sciencemag.org/2012/03/meet-dolphin-mafia