While apes can learn sign language and communicate using it, they have never attempted to learn new knowledge by asking humans or other apes. They don’t seem to realize that other entities can know things they don’t. It’s a concept that separates mankind from apes.

Top 2: A Pangolin reacts happily to a human grooming it in places it could not reach or take care of it by itself. There are many benefits to humans having opposable thumbs.

Top 3: meirl