India, June 22 -- House of the Dragon has made one of its biggest departures yet from George R.R. Martin's Fire & Blood, and fans spotted it almost immediately. In the season 3 premiere, Rhaena Targaryen claimed the wild dragon Sheepstealer, effectively taking over the storyline that belongs to Nettles in the book.

Rhaena then piloted Sheepstealer into battle at the Battle of the Gullet, just like Nettles did in the novel.

The reaction online was immediate. One fan wrote on X, "sheepstealer really adopted rhaena my cuties." Another commentator joked, "Sheepstealer and Rhaena must've watched How to Train Your Dragon."

One user was shocked and confused with the development and wrote, "rhaena on sheepstealer? correct me if im wrong lol it...