World of Warcraft: Cataclysm Database
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Item

Magical Pet Biscuit

tooltip
Magical Pet Biscuit
Magical Pet Biscuit
Binds when picked up
Use: Doubles a targeted Non-Combat Pet's size for as long as it remains at its master's side.
additional info
item level-
classconsumable
stackabilitystackable, maximum stack size (250)