The white stallion is known to be highly intelligent, with a long-standing relationship with humans. White horses have become mythologised in many cultures, often portrayed as a 'saviour' figure – which is quite fitting for a Patronus, wouldn't you say?
Written by the harrypotter.com team
“The Patronus is a kind of positive force, a projection of the very things that the Dementor feeds upon - hope, happiness, the desire to survive – but it cannot feel despair, as real humans can, so the Dementors can’t hurt it.”