An old video of an animal swimming in a lake has resurfaced again, this time as a puzzle that has left many guessing. The video shot back in 2013 was shared on Twitter by forest officer Susanta Nanda who asked his followers to guess the animal swimming in the lake. The correct answer took many by surprise.

The video shows an animal swimming with its head below the waters of the lake. After a few minutes, it emerges out of the water, but the video abruptly ends before we could identify the animal.