|Abilities||Making the level harder.|
|First Appearance||Angry Birds Friends Holiday Oink Tournament|
|Locations||Angry Birds Friends Holiday Oink Tournament|
Grouchy Pig are fluffy pigs that have big bushy eyebrows and yellow eyes with a green iris and black pupils, . They have a grumpy expression.
They are a parody of the Grinch, a humanoid monster that hates Christmas. He is a character from one of the stories made by Dr. Seuss.
On the Holiday Oink Tournament, if a player destroyed a Christmas Hat that a pig was wearing, the pig would transform into a Grouchy Pig, restoring the health of the defeated pig, the Grouchy Pigs are stronger and hard to defeat.