The Harry Potter Compendium
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"The guinea-fowl they had been changing into guinea-pigs had been shut away in a large cage on Professor McGonagall's desk (Neville's still had feathers)..."
—After a class on this spell.[src]

Guinea fowl to guinea pig is a Transforming spell that is covered in fourth year Transfiguration classes at Hogwarts School of Witchcraft and Wizardry. It is noted that Neville Longbottom was not particularly skilled with these spells.

Appearances[]


Transfiguration (class)
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Professors: Albus Dumbledore · Minerva McGonagall
Textbooks: A Beginner's Guide to Transfiguration · Intermediate Transfiguration · A Guide to Advanced Transfiguration
Known practitoners: Emeric Switch · Circe · Falco Aesalon · Mirabella Plunkett · Thaddeus Thurkell ·
Transfiguration spells studied at Hogwarts: Chair to cat · Match to needle · Snail to Teapot · Teacup to Rat · Switching Spell · Transforming Spell · Avifors Spell · Mice to Snuffboxes · Beetle Buttons · Rabbit Slippers · Teapot to tortoise · Draconifors Spell · Lapifors Spell · Vanishing Spell · Vera Verto · Owl to opera glasses · Guinea fowl to guinea pig · Hedgehog to pincushion · Small Child to Rat · Meddling Man to Monkey
Branches of Transfiguration: Transformation · Vanishment · Conjuration · Untransfiguration
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