Orangutans are the closest relatives to human beings. They have far more developed vocalization patterns and habits than researchers realized, and their intelligence is unparalleled among animal species.
One orangutan named Rocky has been proving just how smart and sensitive his kind are. Recently a burn victim named Darci Miller met Rocky at the Indianapolis Zoo. The orangutan noticed her tattoos but then caught sight of her burn scars and asked to see them.
Rocky was so curious and gentle with Darci that many onlookers wondered if his behavior was normal. But according to the zookeepers, Rocky often shows his eagerness to learn and a kindness to others as well.
See this remarkable interaction in the video below: