Elephants, have shown unusual behavior upon encountering the remains of another deceased elephant. They will often investigate it by touching and grabbing it with their trunks and have the whole herd stand around it for long periods of time until they must leave it behind. It is unknown whether they are mourning over it and showing sympathy, or are just curious and investigating the dead body. Elephants are thought to be able to discern relatives even from their remains. An episode of the acclaimed BBC Documentary Life on Earth shows this in detail – the elephants, upon finding a dead herd member, pause for several minutes at a time, and carefully touch and hold the dead creature's bones.