Do Snakes have friends? Social behaviour of a solitary species

Snakes, the slithering creatures of the wild, are one of the most feared animals on the planet. From a man living in rural India, to one in Australia, snakes could make both of them shiver and turn their blood cold. Their silent movement, their swift bite, and of course, their death coil, are all fearful factors when interacting with a snake, venomous or not.
And while snakes are often seen and thought to be solitary in nature, not interacting with their own species, some say that snakes can actually make friends!