This sickening footage shows a man offering food to a friendly monkey before slapping it hard in the face.
The thug reached out his hand towards the langur monkey, sitting in Mandore Gardens in Jodphur, India, then hit it and ran away.
His friends can be heard laughing in the background as the monkey falls backwards onto the floor.
Mandore Gardens attracts thousands of tourists who come to see its memorials to Jodhpur's former rulers, known as dewals.