Search Results for: Meals of meat of primates
small metal rings passed into the hands of human researchers.
has animal scientists intrigued. it's one thing to pass a partner a piece of grub; it's another to give them the currency to purchase it. such acts of charity have long been thought to be restricted to primates like humans, orangutans and bonobos. few, if any, other mammals were thought capable of it...
https://www.smithsonianmag.com/science-nature/parrots-share-currency-help-their-pals-purchase-food-180973917/