“It seems safe to say that apes know about death, such as that is different from life and permanent. The same may apply to a few other animals, such as elephants, which pick up ivory or bones of a dead herd member, holding the pieces in their trunks and passing them around. Some pachyderms return for years to the spot where a relative died, only to touch and inspect the relics. Do they miss each other? Do they recall how he or she was during life?”