I never watched Game of Thrones but, having seen hours of trailers and such, I know dragons — all sizes — were part of the CGI cast.
I Googled “bearded dragon” and found an item on their diets:
Bearded Dragons are omnivores and can eat a range of insects, fruit and vegetables. They need a varied diet and the amount of edible options makes them a fun reptile to feed, as anyone who has seen one chase a cricket will know.
They are omnivores? OK, so I wouldn’t let my bearded dragon anywhere near a tiny dog. I don’t have a tiny dog. But that’s OK. I don’t have a bearded dragon, either.