The interesting part is that when we observe a person in pain our own bodies produce the same chemical pain response as the person suffering the injury. That is the basis of "empathy", the ability to place oneself into the shoes of another. AFAIK, empathy is a function of the "mirror neuron system" which can be found in many mammals. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2900004/ IMO, it is an evolved survival mechanism and is present and displayed very early in life. Examples of empathic mirror neuron response are; Salivating when watching someone eat a delicious morsel Wincing when watching someone else hurt themselves Child copying parental behavior Please Register or Log in to view the hidden image! Please Register or Log in to view the hidden image! https://blog.cognifit.com/mirror-neurons/ Learning interspecies (sign) language R I P........ Koko.......you were a wonderful person.