What Do You Call This? Duck Showing Social Behavior, Feeds Fish With Food

Wait is this animal showing social behavior that doesn't favor itself? That's something quite special in nature, there are not many animals doing that. Gorillas, apes and so on, dolphins, whales, maybe dogs in some kind of way, some elephants, bears but that's it I guess.

http://www.ngyab.com/2018/05/10/what-do-you-call-this-duck-showing-social-behavior-feeds-fish-with-food/