Cross-Species Switches are a type of transfiguration that is caused when Transforming Spells are modified in certain ways^[1]. They are presumably a type of Switching Spell that changes certain aspects of different species and may therefore be Trans-Species Transformation.

The fourth year transfiguration students at Hogwarts School of Witchcraft and Wizardry were given homework on Cross-Species Switches, as listed below:

1. Describe, with examples, the ways in which Transforming Spells must be adapted when performing Cross-Species Switches^[1].
2. If bodyweight is A, viciousness is V, intended transformation is T, wand power is W and concentration is C, and assuming T=(WxC)/(VxA)xZ then what does Z equal?^[2]

AppearancesEdit

• Harry Potter and the Philosopher's Stone (film) (First mentioned)
• Harry Potter and the Goblet of Fire (Mentioned only)

Notes and referencesEdit