I’ll follow you. I’ll lead you about a round,
Through bog, through bush, through brake, through brier.
Sometime a horse I’ll be, sometime a hound,
A hog, a headless bear, sometime a fire,
And neigh, and bark, and grunt, and roar, and burn,
Like horse, hound, hog, bear, fire, at every turn.

– William Shakespeare

A Midsummer Night’s Dream, Act 3, Scene 1. Puck says this in an aside after transforming Bottom’s head into that of a donkey when he witnessed Bottom’s terrible acting. The mischievous fairy vows to lead Bottom and his fellow craftsmen in circles through the forest. To frighten them, the shapeshifting Puck will take the forms and sounds of various wild animals and of fire, terrifying them with his magic.