Sci Am October 2019 issue has an article, Is Death Reversible? by Christof Koch of the Allen Institute for Brain Science. At p. 36 he writes; `... there is no credible evidence that apes, dogs, crows and bees have minds sufficiently self-aware to be troubled by the insight that one day they will be no more.’
Relate this to a preceding question: Is abstraction a collective invention of human society? Suppose that abstraction is an invention of society’s networked minds of hundreds or thousands of generations. Then the difference between `apes, dogs, crows and bees ‘ and humans is that humans acquire the abstraction `death’ from the store of abstractions devised collectively by society. If so, humans do not differ from `apes, dogs, crows and bees ‘ in understanding death due to superior individual cognition that arises during an individual lifespan, but rather from an insight collectively arrived at by networked minds over many generations.
For an individual human, it is difficult to separate from knowledge that which has been acquired by means of language. Paul Feyerabend in 1993 in Against Method, observed ` … describing a familiar situation is, for the speaker, and event in which statement and phenomenon are firmly glued together.’ Perhaps that applies to the abstraction `death’? Or not?