Coccidiosis in the Coati-like Animal (Cacomistle)

What is it?

Coccidiosis is a parasitic intestinal disease caused by microscopic protozoans of the genus Eimeria or Isospora. In the cacomistle, a small carnivore related to the raccoon often kept in zoos or private captivity, this infection mainly affects young animals. It causes inflammation of the intestinal wall that disrupts digestion and food absorption.

The parasite multiplies within intestinal cells and then releases microscopic eggs called oocysts, which are shed in the feces. These oocysts contaminate the environment and can infect other animals if hygiene conditions are not adequate.

Commonly observed signs

These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.

Causes and risk factors

Coccidiosis is caused by parasitic protozoans that invade the cells lining the intestine. These parasites most commonly belong to the genera Eimeria or Isospora, which are widely distributed among carnivores and wild mammals.

Infection occurs when the animal ingests oocysts present in an environment contaminated by infected fecal matter, for example on the floor of an enclosure, in food, or in drinking water.

Young animals recently weaned or newly arrived are the most vulnerable, as their immune system is not yet mature. Stress from transport, environmental changes, or living alongside other animals also promotes disease development.

Poorly maintained enclosures, high animal density, or insufficient hygiene significantly increase the risk of contamination. Unbalanced nutrition or concurrent illness that weakens natural defenses are also contributing factors.

Transmission

Transmission occurs through the fecal-oral route: the animal ingests oocysts present in a contaminated environment (soil, bedding, food, water). The parasitic cycle is completed within the intestine of the host, after which new oocysts are shed in the feces, capable of surviving for extended periods in the external environment.

Diagnosis and care

Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.

Treatment

Treatment is mainly based on specific anticoccidial antiparasitic drugs, prescribed and adjusted by the veterinarian according to the severity of the infection. Rehydration, given by mouth or intravenously depending on the case, is often necessary to offset digestive losses. Nutritional support may be added to help the animal regain its weight and strength.

Prevention

Possible complications

Without treatment, severe dehydration can develop, particularly in young or already weakened animals. Significant weight loss weakens the body and may open the door to other opportunistic infections. In the most severe cases, especially in very young individuals, the outcome can be fatal if treatment is delayed.

When to see a veterinarian

Prognosis

The outlook is generally favourable in healthy adults, especially if treatment is started promptly. It becomes more guarded in young animals, already weakened individuals, or if treatment is delayed, as dehydration can progress rapidly in small mammals.

Frequently asked questions

References

ESCCAP — European Scientific Counsel Companion Animal Parasites

Cornell Feline Health Center

Content reviewed by the TunisieVet editorial team · Updated 04 September 2026