Overview

Coprophagia (sometimes spelled coprophagy) is the behavior of eating feces. It appears across a wide range of species and serves different biological or behavioral functions depending on the animal. In some cases it is a deliberate, adaptive process; in others it is an abnormal or unwanted behavior that merits veterinary attention. Many animals engage in some form of feces consumption.

Occurrence and notable forms

Occurrences vary: certain herbivores and hindgut fermenters perform a specialized form called cecotrophy, in which soft, nutrient-rich droppings are reingested to recover vitamins, microbial protein, and other products of fermentation. Rabbits, some rodents, and small herbivores commonly show this behavior. Domestic animals such as dogs and puppies are also frequently observed eating feces, whether their own, that of other animals, or from the environment.

Common causes and motivations

Reasons for coprophagia are multifactorial and may include:

  • Physiological needs — recovering nutrients missed during digestion (as in cecotrophy).
  • Medical problems — malabsorption, pancreatic insufficiency, or parasitic infestation can increase appetite or change stool content.
  • Behavioral causes — stress, boredom, attention-seeking, or learned habits often underlie cases in pets.
  • Environmental factors — inadequate diet quality or variety and lack of stimulus in the animal’s surroundings have been proposed as contributors.
  • Hygiene and maternal behavior — mothers may consume offspring droppings to keep nesting areas clean.

Health risks and concerns

Eating feces can transmit pathogens (bacteria, viruses, and parasites) and spread intestinal parasites among animals and to humans. For companion animals, it can complicate parasite control and hygiene. In humans, intentional ingestion of feces is rare and generally associated with severe psychiatric or neurological conditions, extreme survival situations, or cultural practices; it carries significant health risks and social stigma.

Prevention, management, and remedies

Addressing coprophagia typically begins with a veterinary assessment to rule out medical causes. Management strategies include improving diet quality and enrichment, prompt removal of feces, supervised outdoor time, training to discourage the behavior, and treating any underlying parasitic or digestive disorders. Anecdotal remedies exist — for example, some owners report that adding small amounts of pineapple to food changes stool taste and deters dogs (pineapple) — but such measures are variable in effectiveness and should be discussed with a clinician. Attention to dietary variety and relief of boredom or anxiety are often more consistently useful than single food additives.

Ecological and notable facts

Beyond individual animals, coprophagy has ecological importance: organisms that consume feces help recycle nutrients, disperse microbes, and accelerate decomposition. Distinguishing adaptive forms such as cecotrophy from pathological coprophagia is important for appropriate response by caretakers and veterinarians.

For more general information on species differences and practical guidance, consult veterinary resources and species-specific behavior references, and consider professional evaluation when coprophagic behavior appears suddenly, increases, or poses health risks.

more on animal behavior | dogs and puppies | environmental enrichment | diet and nutrition | dietary anecdotes