Do Animals Perceive the Uncanny Valley

pathological aggression: dolphins kill porpoises for no reason, they don’t eat them, they’re not competitors. Does this suggest the uncanny valley exists for all mammals?

 Carl Sagan's Encounter With a Dolphin's Theory of Mind

I was swimming in a large indoor pool with Peter. When I threw the pool's rubber ball to Peter (as was natural for me to have done), he dove under the ball as it hit the water and batted it with his snout accurately into my hands. After a few throws and precision returns, Peter's returns became increasingly inaccurate – forcing me to swim first to one side of the pool and then to the other in order to retrieve the ball. Eventually, it became clear that Peter chose not to place the ball with...

 Sagan's Positive View of Advance Alien Civilizations

It is at this point that the ultimate significance of dolphins in the search for extraterrestrial intelligence emerges. It is not a question of whether we are emotionally prepared in the long run to confront a message from the stars. It is whether we can develop a sense that beings with quite different evolutionary histories, beings who may look far different from us, even "monstrous," may, nevertheless, be worthy of friendship and reverence, brotherhood and trust. We have far to go; while th...

 Dolphins have Genes for Smelling

Another curious tale of dead genes involves our sense of smell, or rather our poor sense of smell, for humans are truly bad sniffers among land mammals. Nevertheless, we can still recognize over 10,000 different odors. How can we accomplish such a feat? Until recently, this was a completely mystery. The answer lies in our DNA—in our many olfactory receptor (OR) genes. [...] Our own sense of smell comes nowhere close to that of mice. One reason is that we express fewer OR genes—only abou...

 We Settle into a Comfortable Identity as Adults

She still felt seasick occasionally, especially when the wind got up and the ship plunged heavily over the crests of the graygreen waves, and then it was Pantalaimon’s job to distract her from it by skimming the waves as a stormy petrel; because she could feel his boundless glee in the dash of wind and water, and forget her nausea. From time to time he even tried being a fish, and once joined a school of dolphins, to their surprise and pleasure. Lyra stood shivering in the fo’c’sle and ...