Here's a silly little ditty about Hagrid's pet dragon Norbert to the tune of Rudolph the Red-Nosed Reindeer.
Norbert the Ridge-Backed Dragon
You know Chinese and Swedish and Welsh ones are scary.
Horntail from Hungary tried to kill Harry.
But do you recall
The most fearsome dragon of all?
Norbert the ridge-backed dragon
Had a fire-breathing nose.
When the gamekeeper hatched him,
He ignited Hagrid's clothes.
All of the burns and scratches
Added up, and Hagrid knew
He had to banish Norbert,
Send him to a dragon zoo.
Then one balmy summer's eve,
Charlie Weasley said,
"Norbert's fine, and by the way,
It's Norberta, with an 'a'."
Hagrid was most astonished,
Crying in perplexity,
"Norbert the ridge-backed dragon,
How'd I miss that you're a she?"