Female Pig

There are four known instances of Female Pigs, two appearing in the Angry Birds Seasons episode Hogs and Kisses, one in the Angry Birds Bing Videos, and one in the King Pig Mode.

Female Pig (Credits)
This Female Pig is the size of a large pig and wears a pink bow and eye make-up. This pig is seen in the credits of the game and in promotional images, as well as appearing in the game. A plush toy was released of this character.

Cardboard Cutout
A cardboard cutout Female Pig wearing a blonde wig is seen in the Angry Birds Bing Videos. This cutout was used by the Birds to get back their eggs the pigs stole.