Water dragon

"There must be a water dragon in that sewer — they carry these parasites, you see."

- Newton Scamander

Water dragons are, presumably, dragon-like creatures that inhabit bodies of water. They usually carry a specific kind of parasite that can also be transmitted to humans, infecting their tear ducts.

In 1927, Newton Scamander speculated that there might be a water dragon living in the Parisian sewer used by Yusuf Kama as an hideout, after discovering (and later successfully extracting) a water dragon parasite in the latter's eyes.

Behind the scenes

 * Physignathus are a real-life genus of lizards commonly known as water dragons. However, they are native to Southeast Asia and Australia, not Europe, making them unlikely candidates for the creature mentioned in 🇨🇬. Alternatively, in real-life, the term water dragon can also refer to Saururus cernuus, a plant native to eastern North America.