"If you must know, when I was three, Fred turned my - my teddy bear into a great big filthy spider because I broke his toy broomstick... You wouldn't like it either if you'd been holding your bear and suddenly it had too many legs and... "
Ron Weasley on the origin of his Arachnophobia[src]

Spiders are eight-legged and eight-eyed arachnids. They are very common and come in many species, varying from region to region; all are carnivorous and some are venomous, but for the most part they are relatively harmless and can sometimes be used as a potion ingredient.


The largest species of spider is the Acromantula, a wizard bred-species which also has the ability to speak, along with being extremely dangerous carnivores. Spiders are known for spinning webs. The webs of the Acromantula are large and dome-shaped. Spiders of all sizes fear the Basilisk above all other things, which caused those at Hogwarts to flee into the Forbidden Forest in the 1992–1993 school year.[1]

The Spider repelling spell can be used to repel and blast spiders away from an individual; indeed, this spell is particularly useful when repelling Acromantulas. Spiders often inhabit dark environments, like the cupboard under the stairs[2], Broomsheds, and even the Forbidden Forest.[3]


Boggart morph

A Boggart taking the form of a giant spider, to represent Ronald Weasley's greatest fear.

Ronald Weasley was well-known for his arachnophobia, a fear and phobia of spiders. However, he was fine if they were dead and he simply had to cut them up during potions.[1] During the 1993-1994 school year, Ron's boggart manifested in the form of a giant spider during Defence Against the Dark Arts.[4]

In 1992, spiders fled Hogwarts when a Basilisk was unleashed. Harry Potter, Ron and Hermione Granger notched their strange behaviour[1] and Hermione used it to piece together what was petrifying people in the school.[5]

The Tarantula is a family of spiders, examples of which can be found for sale in Knockturn Alley.[6] In Borgin and Burkes, there was a cage that had living, huge black spiders in it.[7]

Barty Crouch Jr, disguised as Alastor Moody, taught his fourth year Defence Against the Dark Arts class the use of the Unforgivable Curses, performing one of each of the three curses on one of each of three spiders.[8] In 1995, the trio found spiders as big as saucers in a dresser in the dining room of 12 Grimmauld Place, with Ron leaving the room to make a cup of tea and did not return until they were gone, due to his aforementioned Arachnophobia.[9]

Types of Spiders


The Acromantula

Giant Tarantula

Ron Weasley with a Giant Tarantula on his arm, much to his horror

Behind the scenes


Ron Weasley's fear of spiders


Notes and references

  1. 1.0 1.1 1.2 Harry Potter and the Chamber of Secrets, Chapter 12 (The Polyjuice Potion)
  2. Harry Potter and the Philosopher's Stone, Chapter 2 (The Vanishing Glass)
  3. Harry Potter and the Chamber of Secrets, Chapter 15 (Aragog)
  4. Harry Potter and the Prisoner of Azkaban, Chapter 7 (The Boggart in the Wardrobe)
  5. Harry Potter and the Chamber of Secrets, Chapter 16 (The Chamber of Secrets)
  6. Harry Potter and the Philosopher's Stone, Chapter 6 (The Journey from Platform Nine and Three-Quarters)
  7. Harry Potter and the Chamber of Secrets, Chapter 4 (At Flourish and Blotts)
  8. Harry Potter and the Goblet of Fire, Chapter 14 (The Unforgivable Curses)
  9. Harry Potter and the Order of the Phoenix, Chapter 6 (The Noble and Most Ancient House of Black)
  10. The Lost Harry Potter Character You Never Got to Meet, io9
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