Flobberworm

• Type: Magical Creature
• Ministry of Magic Classification: X (Boring) (Fantastic Beasts and Where to Find Them)
• Native Range: Damp ditches (Fantastic Beasts and Where to Find Them)
• Distinctions: Toothless, brown, largely immobile, produces green mucus

The Flobberworm is a thick, brown magical worm that can grow up to ten inches in length. It is a simple creature, appearing physically identical at both ends, and is toothless. Its most notable feature is the constant production of a green, slimy mucus. This Flobberworm Mucus is known to have properties useful in Potions, such as for thickening draughts.

Flobberworms are herbivores whose preferred diet consists of vegetables, particularly lettuce and cabbage. They are exceptionally sedentary creatures, spending most of their time doing little more than eating and excreting mucus. Their lifestyle is so uneventful that the Ministry of Magic classifies them with the lowest possible rating, “X,” for “boring.” They thrive in damp environments like ditches and require careful feeding. Overfeeding a Flobberworm can be lethal, as seen during a Care of Magical Creatures lesson where Rubeus Hagrid's students gave them too much lettuce, causing the worms to grow excessively large and lie on the ground, twitching feebly.

• Harry Potter and the Chamber of Secrets: When Gilderoy Lockhart fantasizes about a dramatic re-enactment of his supposed heroic deeds for the Daily Prophet, he suggests that the part of a “slobbering, vengeful Transylvanian” ghoul he vanquished could be played by Harry Potter, while the part of a “bewitched” Flobberworm could also be assigned.
• Harry Potter and the Prisoner of Azkaban: The Flobberworm is the subject of Rubeus Hagrid's first-ever Care of Magical Creatures lesson as a professor. The third-year students, including Harry Potter, Ron Weasley, and Hermione Granger, are tasked with observing and feeding them. The lesson's simplicity is met with derision from Draco Malfoy and his cronies.
• Harry Potter and the Goblet of Fire: A giant Flobberworm is one of the magical creatures placed inside the maze for the Third Task of the Tri-Wizard Tournament. Cedric Diggory encounters and successfully navigates past it.
• Harry Potter and the Half-Blood Prince: A barrel of dried Flobberworms is listed among the potion ingredients available to students in Horace Slughorn's Potions storeroom.

• The primary source of information on Flobberworms outside the main narrative is the textbook `//Fantastic Beasts and Where to Find Them//` by `Newt Scamander`, which provides their Ministry of Magic Classification and details on their mucus.
• The name “Flobber” is likely onomatopoeic, derived from words like “flabby” and “slobber,” which aptly describe the creature's soft body and slimy nature.
• In the film adaptation of *Harry Potter and the Prisoner of Azkaban*, Rubeus Hagrid's first lesson is with Hippogriffs, and the Flobberworm lesson is omitted. (film)