Dragons like in fairy tales - fictional
Komodo dragons - real, live in Indonesia, do not breathe fire, hanker after princesses or lie on heaps of gold and jewels 
Way upthread, there was confusion about Great Britain and the Isle of Wight. As I understand it, geographically (ie ignoring political boundaries) the British Isles is the name for a group of islands off the northwest coast of Europe. The biggest island is Great Britain and the next biggest is Ireland. The island of Great Britain contains most of the landmass of the countries of England, Scotland and Wales. There are lots of other islands in the British Isles, e.g. the Isle of Wight, the Isle of Man, Anglesey, Arran, the Hebridean islands, the Orkneys, the Shetlands. These are not part of Great Britain geographically because they are separate islands.
Politically, the United Kingdom is made up of four separate countries: England, Scotland, Wales and Northern Ireland. N. Ireland is made up of part of the island of Ireland + a few small islands. The other countries each comprise part of the island of Great Britain + various other islands. The Isle of Wight is in England politically.
If anybody seriously wants to get to grips with knowing the countries of the world - spelling, location, which continent are they in, population, borders, you name it - you can't do better than play some Geography quizzes on Sporcle. Free website, quizzes on everything under the sun.