Orangutans are among our closest relatives in the animal kingdom, sharing 97% of our DNA. They are known to be extremely intelligent, observant and inquisitive.
 
In this incredible video, a couple visit Rajang the Orangutan at the Colchester Zoo and are amazed by what happens when the 37 week pregnant lady approaches the enclosure. The Orangutan very quickly become fixated with her pregnant belly and kisses it through the glass. Does he know the woman is pregnant? It certainly seems so. He kisses her belly again and again.

When the man tried putting his belly to the glass, all he got was a dirty look. The lady then returned her belly to the glass and Rajang touched and kissed it again.
 
This amazing encounter proves just how much like us orangutans really are – and the incredible depth of their intelligence and understanding.