Back story here and here.
image from Beautiful Rwanda
Observations from a strange planet
Observing that other species can outperform us on tasks that we assume we excel at is a bit humbling. Rather than taking such findings as a rare example or a fluke, we should incorporate this knowledge into a mindset that acknowledges that chimpanzees, and probably other species, share aspects of what we think of as uniquely human intelligence.-- Jill Pruetz of Iowa State University, Ames quoted in Chimps outperform students in a memory game.
The birth of a gorilla in the 'wild' is celebrated. Are we looking at a hope for the future or a ghost from the past?
Chimpanzees are incapable of spite, it seems...but researchers are having difficulty reconciling this with the idea that chimps do exhibit altruism. I suggest a simple explanation: spite is not the "evil twin that cannot be separated" from altruism, as researcher Keith Jensen puts it. Altruism is the tendency to do things that benefit others, at your own expense. Its opposite is miserliness. Spite is the tendency to attempt to harm those who have benefited in your stead. Surely its opposite is the tendency to attempt to help those who have suffered while you have gained. Is this not sympathy? If chimps show sympathy towards individuals who have been deprived for their benefit, but not spite towards those who have benefited from their loss, then there might be some explaining to do.[For textbook nastyness, see reports of mass "execution" of gorillas in Congo.]
Above: young man of the forest