The predecessors of Daenerys' dragons then died in battle during a great civil war known as the Dance of the Dragons, as chronicled in House of the Dragon, and after that, dragons grew smaller and weaker in captivity. The most notable dragon of this age is Aemond Targaryen's mount Vhagar, the oldest and largest living dragon in the House of the Dragon timeline, the same dragon ridden by Queen Visenya Targaryen during Aegon's Conquest. Moreover, unlike Game of Thrones, which featured only three dragons, House of the Dragon has shown or mentioned all of the 17 dragons owned by House Velaryon and House Targaryen in the books 200 years before the War of the Five Kings.