The dog that was thrown off a two-storey apartment terrace in Chennai was found alive on Tuesday evening. Shravan Krishnan, one of the animal rights activists who fought for police action on the issue, posted a picture late on Facebook on Tuesday night.

Her hind legs are injured and she cannot walk properly right now, Krishnan said. She is now undergoing treatment. "What breaks my heart is that she was still wagging her tail," posted Krishnan. Krishnan's post went viral on social media.

The two medical students involved in the crime – Gautam Sudarshan, who threw the dog from the rooftop, and Ashish Pal, who shot the video – are still on the run. Chennai Police said the duo were hiding in their hometowns, reported NDTV. "We have filed a case under Prevention of Cruelty to Animals Act . Their parents are bringing them to Chennai from Tirunelvelli and Kanyakumari. We expect them to appear before us by noon. We will arrest them," said an officer.

The video, which was shot two weeks ago, went viral on Monday. Sudarshan and Pal were identified by their classmates at Madha Medical College in Tamil Nadu. The 33-second clip, which runs in slow motion, shows a man holding a dog by its neck and then pushing it off the building while smiling. It ends with the animal lying still on the ground. The Humane Society International had offered a reward of Rs 1 lakh to anyone who could provide valid information about the man.