When Prince Harry Met Jane Goodall With A 'Chimp Greeting'. Watch

Prince Harry and renowned primatologist Jane Goodall met at an event on Tuesday. Instead of shaking hands, however, the Duke of Sussex patted Ms Goodall on the head in what is known as a 'chimpanzee greeting'.

A video of the charming greeting that delighted onlookers was shared online by Sussex Royal - the official Instagram account of Prince Harry and Meghan.

The video shows the 85-year-old conservationist instructing Prince Harry to pat her head before they hug. According to the caption, Ms Goodall taught Prince Harry the greeting when they first met.

"The pair share an impromptu dance and 'Chimpanzee Greeting' which Jane taught The Duke when they first met," wrote Sussex Royal while sharing the video on Wednesday.

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A couple of captured moments between The Duke of Sussex and Dr. Jane Goodall at today's event. The pair share an impromptu dance and ‘Chimpanzee Greeting' which Jane taught The Duke when they first met. Today's event was full of education, inspiration and fun. Because working hard and playing hard are not mutually exclusive... 🐒 For more information on today's special event on Roots & Shoots, please see previous post.

A post shared by The Duke and Duchess of Sussex (@sussexroyal) on Jul 23, 2019 at 12:33pm PDT

Since being shared online, the video has collected over 2 million views and hundreds of comments.

"This is adorable," wrote one Instagram user in response to the video. "Love this so much," another added.

According to CNN, Ms Goodall's environmental programme Roots & Shoots is currently holding its global leadership gathering at the Windsor Castle, and Prince Harry stopped by to meet 26 students.