Coprophobia is fear of or aversion to feces or defecation.
In humans, the attitude to feces and defecation has become a cultural taboo.D.L. Wingate, "Everything you wanted to know about constipation and incontinence but were afraid to ask." In: Constipation and Anorectal Insufficiency (FALK Symposium. 1995), 1997, , p.4
In the animal world, many herbivorous grazing animals including cows, sheep, horses, and reindeer avoid feces when feeding. Primates also prefer to forage away from feces-contaminated areas. The aversion is believed to be a strategy to avoid infection.
References