While hunting for the Champions of Boeotia, especially Drakon, Kassandra met an Oil Merchant who was terrified of Drakon's retribution, given he couldn't deliver his oils as his beloved horseSpyro had been stolen.
(If players asked "Where are the horse thieves, again?")
Kassandra:Where can I find these thieves?
Street Vendor:In a camp east of Snake Head Rock.
(If players asked "What does Spyro look like?")
Kassandra:Can you tell me what Spyro looks like? I want to make sure I'm stealing the right horse.
Street Vendor:Where to begin... He's magnificent—a towering stallion as black as night, with a mane of brilliant, shimmering white hair.
(Leave – "I have what I need.")
Kassandra:Looks like I have a horse to find.
Kassandra departed for the military camp outside the city. She arrived and spotted the horse within with the help of Ikaros.
Kassandra:That must be Spyro. Looks like a sturdy horse.
She took care of the soldiers before riding Spyro out of the camp.
Kassandra:You must be Spyro. Let's get you back home.
Kassandra returned to the merchant in Thebes.
Street Vendor: Spyro. Oh, I thought I'd never see you again.
Kassandra:He's all right. Not a hair touched on his mane.
Street Vendor:And Drakon will still get his shipment of oil, won't he Spyro? We'll take it up the mountain, and fill his halls with our wonderful, flammable oil.
Street Vendor:You've made Spyro a happy horse, misthios. And me a happy man.
Kassandra stole Spyro back from the military camp and returned him to his owner. The merchant was able to make his delivery of flammable oil to Drakon at his camp.
This quest is missable: finishing The End of Drakon removes the quest.
Finishing this quest adds jars of flammable oil to Drakon's Training Site, making it easier to apply fire damage over time. This will work best if the player also completes Brewing Love to deprive him of his armor.