Anyone who has heard a cow bawl for her stillborn calf, a goose honk for his lost mate, or a dog whine for her deceased human companion is likely to call it “grief.” However, attributing emotion to non-human creatures is generally labeled “anthropomorphism” because we cannot prove what we are hearing or seeing really fits the words we have for describing it.
Now a study from Italy identifies apparent awareness of death in bottlenose dolphins.
http://www.care2.com/causes/dolphins...and-death.html