I don't know how new or old this story and video clip are but they are related in today's Daily Telegraph.
At a US zoo a 210-pound ape [15-stone or 95-kg] noticed a young bird struggling in a pond. It picked a leaf from a tree and tried to get the bird to grasp it in its beak. After several attempts the chick did so and was saved from drowning. The orangutan placed the bird on the grass and proceeded to stroke it gently. The video is captivating.
The origins of mammalian compassion to mammals who are not of their own genus or species are not limited to the religious and non-religious world of Homo sapiens.
I wrote "atheist orangutan" to attract special attention and to strongly emphasise a point because christians----with their anti-atheist stance----like to claim morality and benevolence for themselves. A fundamentalist religious writer might try to pretend that the ape was displaying the principles of christian charity and love. Instead, it was displaying the best principles of human charity and love.
Certainly, orangutans and other apes are neither christian nor muslim, although presumably not knowingly 'atheist' or 'non-theist' either---- because they have no fictional theism to contend with as we atheists and humanists have. Of course, aside from this, some mammalian mothers do like to nurture foundlings of other species.
This event visibly demonstrates that some non-human primates can express emotional and caring rationality, coupled with kindness, mercy and tenderness, towards others of the mammal kingdom who would otherwise drown and die.