In a Time Magazine article titled “The Mystery of Animal Grief” by Jeffrey Kluger, scientists explain that animals do grieve and that they honor and mourn their dead with an intensity some people don’t even display.
For instance, researchers have observed how crows will gather around a departed crow and call and call until hundreds of flock mates arrive. They will then stand surrounding the dead crow and maintain total silence, broken only by occasional approaches to offer odds and ends to the corpse for instance, pebbles or short sticks. After a period of time, they will depart, never to return.
More turnout than I could ever dare to expect, even allowing for the people who were just wanting to make sure I was dead.
(Plucked from Georganna Hancock’s writing research.)