A pig suffers rectal prolapse due to dehydration and overcrowding.

Rectal prolapse is the exteriorization or the protrusion of one of more layers of the rectum through the anus. Rectal prolapse occurs in pigs when muscles and ligaments are overcome by straining pressure arising from overcrowding force, coughing, dehydration, diarrhea and constipation.

When animals are forced and overcrowded onto transport trucks, there is an increase in abdominal pressure which combined with dehydration will cause rectal prolapse to occur.