AEST 08:53, Mon Jul 9 2012
The world-famous running of the bulls event began on Saturday morning in Pamplona, Spain.
The practice involves thrill-seekers running in front of a small group of bulls that have been let loose, on a course of a sectioned-off subset of a town's streets.
The event runs over eight days and is broadcast live on two national television channels in Spain.
(All images courtesy of Getty)
Revellers hold up their red hankerchiefs during the opening day ceremony.