Missing humaness?? 'animalness'??

The video of a man in Chennai, dropping a puppy from the terrace with a smile, went viral today in the social media. 

photo: http://www.bgr.in/

Like any other person I was shocked the way the person smiled while dropping the poor pup. 

News reports say that the Kundrathur police have filed a case against him. 

Actually, it came to light that he was supposed to be medical college student. 

Animal rights activists have raised their voice against this act and had a press meet today demanding serious action against the person. 

What are we humans missing? Compassion ? love? Humanness?(sorry animalness??)