This is an elephant. A female, baby elephant. Her name is Tara and it looks like she likes hugs!
According to the video, the incident took place in Chiang Mai in Thailand, at the Patara Elephant Farm, where people provide health-care and breeding management for these animals and help those who are injured by mine bombs to recover.
The baby elephant looks so enthusiastic and plays with the man like a puppy… only, she weighs 1000 times more!