Kaushik Sengupta, a self-taught social documentary photographer, is the creator of a photo essay featuring Mr. Sandip Karan of Kolkata, India. Mr. Karan is known in his area as ‘street dog doctor’ because of his caring love for street dogs. Till-to-date, he has rescued and treated around 2500 street dogs in his own locality and adjacent areas. The photo essay can be found in his website, in Galli Magazine and in the Invisible Photographer Asia website.