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?

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

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

Pinkie Pie Fan Club - Page 130 - Fan Clubs - MLP Forums

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

My Little Pony: 10 Best Pairings In The Entire Series

Action Figure Insider » DISCOVERY FAMILY CHANNEL INTRODUCES THE NEXT MAGICAL CHAPTER IN THE MY LITTLE PONY UNIVERSE WITH BRAND-NEW SERIES MY LITTLE PONY: PONY LIFE #MLP

User blog:321SPONGEBOLT/Cuddles (2-part fanfiction), My Little Pony Friendship is Magic Wiki

Equestria Daily - MLP Stuff!: Pinkie Confirmed for Living at Sugar Cube Corner

Pinkie Pie: Toilet Diver - Fimfiction