Almost every holiday has a symbol that most people associate it with. Christmas has the tree, Easter has the bunny, Thanksgiving got the turkey, Eid Alfitr got the lantern, and Eid Aladha has the sheep.
Today muslims around the world celebrated Eid Aladha, which is also known as the feast of sacrifice. It is a celebration “to honor the willingness of the prophet Ibrahim (Abraham) to sacrifice his son Ismail (Ishmael) as an act of submission to Allah’s command and his son’s acceptance to being sacrificed, before Allah intervened to provide Ibrahim with a Lamb to sacrifice instead”. Hence, muslims sacrifice certain animals, many choose sheep, and donate some of it to those in need.
The picture shows part of the decorations of a kids party celebrating Eid Aladha today.