Why does Pinkie Pie have a strong relationship with Rainbow Dash? - Sugarcube Corner - MLP Forums

I always wondered why Pinkie Pie and Rainbow Dash have such a strong friendship?

Has anybody figured out if Pinkie Pie is adopted or not? - Quora

Pinkie Pie As A Pokemon! (MLP x Pokemon)

Pinkie Pie Fan Club - Page 123 - Fan Clubs - MLP Forums

Food and beverage, My Little Pony Friendship is Magic Wiki

fizzverse: pinkie pie reference by fizzmitz on DeviantArt

Pinkie Pie Fan Club - Page 72 - Fan Clubs - MLP Forums

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Pinkie Pie (O&C), My Little Pony: Friendship Is Magic - Rakoon1's universe Wikia

Pinkie Pie, My Little Pony Friendship is Magic Wiki

My Little Pony: Pony Life (Western Animation) - TV Tropes