Well, people always find a way to doubt that animals have a sense of &quot;self&quot;. Like in the test where they painted a dot on a chimps forehead and gave him a mirror - he wiped the dot off after looking at the mirror, which you know - would be a pretty good indication that he understood, in some way, that the creature in the mirror is him and not some other chimp. But obviously you have people who will say that the chimp might have thought that touching his own forehead made the other chimp touch their forehead, without realising that the image in the mirror is him and not another animal.