LifeChimpanzees recognise photos of friends they haven't seen for decades Bonobos and chimps in zoos remember individuals they lived with more than 20 years ago, showing a long-term social memory comparable to that of humans News
LifeChinstrap penguins take thousands of very short naps every day While incubating their eggs, chinstrap penguins need to stay vigilant for predators – so they only sleep for a few seconds at a time News