Piggys For Leann.

Here is the 86 ct value from Bulgaria's 1991 Farm Animals set of eleven.

On June 18, 1987 Denmark issued this 3.80 kr stamp (Facit #924) to commemorate the centenary of the establishment of the first co-operative bacon factory in Horsens. Stamp is printed in color offset and steel engraving (blackish violet color of inscriptions and marking on pig's hip).

The 1000 won value (Sc #1855) of the Republic of Korea's 1993-8 definitive series depicts an ancient Soksu stone carving of a pig. Stamp was issued on December 16, 1996.

From eng.buddhapia.com, "Chu-lungf/pig dragon served as some kind of ritual object, possibly connected with rites of procreation and fertility, since large- and small-scale nude female figures made of pottery were also found in the Mother Goddess Temple at the Hung-shan Ox River site."

This 55c of Germany was issued on November 13, 2008 to commemorate the 30th anniversary of the founding of the A Heart for Children relief organization. An array of children-like drawings, including a pig, is shown on the stamp.

On August 26, 2008 Jersey issued a domestic rate (35 p), "Farm Animals" coil strip of 5 designs. One of the stamps (Sc #1335c) depicts a sow and piglets.

In 2010, the stamps were reissued with a "2010" date below the bottom frame line.

Here is Germany's April 7, 2005 1.44 euros stamp commemorating the birth bicentenary of Danish author Hans Christian Andersen. Stamp depicts various silhouetted characters from Andersen's stories, including a pig and swineherd from his "The Swineherd".

This stamp was issued as a pane of 10 (5 x 2). A self-adhesive coil variety was released on the same date.

Hungary
World of Hunting and Nature Exhibition
September 25, 2021
Set of eight, one stamp depicts a wild boar.

Albania
Domestic Animals
February 25, 1966
Set of eight, one stamp depicts a pig.

On May 24, 2018 Ireland issued this one euro stamp to commemorate the 50th anniversary of 'Na Piobairi Uilleann' (Piper Society). Stamp depicts a detail of a 9th-10th century illuminated manuscript page showing a pig playing the Uilleann pipes (elbow pipes, or Irish pipes). Later, the same design was used as an ATM/computer-vended 'stamps on a roll' stamp/label.

Here is the 85c value (Mi #3262) from Germany's September 1, 2016 Endangered Livestock Breeds souvenir sheet of two stamps. Stamp depicts an Angeln Saddleback pig, a rarer breed seen mainly in Schleswig-Holstein, Germany.

This February 19, 1955 12 stotinka value (Sc #884) of Bulgaria is from a four-stamp 'Farm Animals' set. A sow and piglets are shown.

Netherlands
Experience Nature - Leuvenum Forests
August 15, 2022
Set of ten, one stamp depicts a wild boar.

Portugal
Hunting in Portugal II
May 26, 2022
Set of four, one stamp depicts Wild Boar (Sus scrofa).

San Marino
Wildlife of San Marino
July 12, 2022
Set of four, one stamp depicts Wild boar (Sus scrofa).

Kazakhstan
EUROPA - Endangered Species
November 29, 2021
Set of two, one stamp depicts Wild Boar (Sus scrofa).