Answer: The Story is something Fantastical, and it can be understand by some parts of it like:
"And from inside the boot came crawling a lizard as big as a kitten, with large, shiny wings"
"At first there were only a few, but in a week or two the country was simply running alive with dragons of all sizes, and in the air you could sometimes see them as thick as a swarm of bees"
From this parts, we can easily observe the fantastical words like Large Lizard, Dragon etc. so, the story can't be "full of facts" type.
Hope this helps!
