Basilisk

Basilisk

Woodblock print of a basilisk from Ulisse Aldrovandi, Serpentum, et draconum historiae libri duo, 1640
Sub grouping	Mythological hybrids
Similar entities	Dragon, Cockatrice, Sea serpent, Giant anaconda, Venomous Mythical Snake
Folklore	European

In European bestiaries and legends, a basilisk (/ˈbæsɪlɪsk/ or /ˈbæzɪlɪsk/^[1]) is a legendary reptile reputed to be a serpent king, who causes death to those who look into its eyes. According to the Naturalis Historia of Pliny the Elder, the basilisk of Cyrene is a small snake, "being not more than twelve inches in length",^[2] that is so venomous, it leaves a wide trail of deadly venom in its wake, and its gaze is likewise lethal.

According to Pliny, the basilisk's weakness is the odor of a weasel. The weasel was thrown into the basilisk's hole, recognizable because some of the surrounding shrubs and grass had been scorched by its presence. It is possible that the legend of the basilisk and its association with the weasel in Europe was inspired by accounts of certain species of Asiatic and African snakes (such as cobras) and their natural predator, the mongoose.