Posted: Jul 29, 2014 7:22 am
by smudge
I think this ties in to the idea of consciousness - of being aware that one is an individual- aware that others are individuals.
Unless an animal has the ability to recognise itself and others as active thinking individuals it probably couldn't recognise a particular individual as being 'dead'.
The mirror test is designed to test an animals ability to self recognise and the wiki page gives a list of animals known to have the ability; http://en.wikipedia.org/wiki/Mirror_test
Having a concept of 'self' and one of 'mortality' are not identical of course but it seems logical to imagine they are closely related.