Mailonline, August 4, 2012

Intelligent and inquisitive, chimpanzees have  always been able to communicate with man.

But this heartbreaking video shows just how  desperate this chimp is to be understood and to be let out of his  cage.

The chimp is seen in the video motioning to a  watching visitor to unlock the bolt on what appears to be a glass door and lift  the window, so he can be free.

The YouTube user who uploaded the video claims that the monkey wanted to escape and was telling him to twist open the bolts

The YouTube user who uploaded the video claims that the  monkey wanted to escape and was telling him to twist open the bolts.

Helping hand: The chimpanzee desperately tries to communicate with the human visitorHelping hand: The chimpanzee desperately tries to  communicate with the human visitor.

Tapping on the window the chimp repeatedly  urges people standing on the other side of the glass to let them  outside.

It links its fingers together, a signal  similar to the American Sign Language representation of the word ‘gate’.

Alex Bailey from Manchester, who recorded the  interaction at the Welsh Mountain Zoo, interprets the signs as a direction to  free the chimp, The Telegraph reported.

One chuckling man taps on the window and  copies the chimp’s actions, mimicking the animal’s mimes of opening the  window.

A bystander can be heard giggling and saying:  ‘He wants us to open it’.

But the chimpanzee is more focused on trying  to make itself understood, as it longingly looks at the people in front of  him.

Let me out! The chimp seems to make a sign that is similar to ASL's gate gestureLet me out! The chimp seems to make a sign that is  similar to ASL’s gate gesture
Communicating: The video shows the visitor mimicking the chimp's hand motionsCommunicating: The video shows the visitor mimicking the  chimp’s hand motions.
Understand me! The chimp points to its hands as it attempts to make itself understoodUnderstand me! The chimp points to its hands as it  attempts to make itself understood.

The video, which lasts around 48 seconds, was  filmed at the Welsh Mountain Zoo, according to The Telegraph.

If it is communicating with sign language, it  is not the first chimpanzee to do so.

Washoe was a female chimpanzee who was the  first non-human to learn to communicate using American Sign Language.

The animal, who died in 2007, learnt 350  words, and taught her adopted son Loulis.

Other chimpanzees were later taught 150 or  more signs, which they were able to combine to form messages.

Chimpanzees and humans share many  similarities and they are believed to be our closest relative in the animal  kingdom.

Chimpanzees communicate using a variety of  grunts, screams and other sounds.

Most of their communication, however, is done  through gestures and facial expressions.

Many of their facial expressions – surprise,  grinning, pleading, comforting – are very similar to humans.

Humans have one fewer pair of chromosomes  than other apes, since the ape chromosomes 2 and 4 have fused into a large  chromosome (which contains remnants of the centromere and telomeres of the  ancestral 2 and 4) in humans.

Chimpanzees are often incorrectly called  monkeys, but are in the great ape family just like us. The other great apes are  orangutans and gorillas.

Human brains have a high surface area because  they are much more wrinkled than chimpanzee brains, with greater numbers of  connections.

These and a larger frontal lobe, allow us a  greater capacity for abstract and logical thought.

See video link here (at bottom of page).