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COCCIDIA are one celled protozoans that are parasites of the lining of the small intestine which can cause vomiting, diarrhea, bloody stools and dehydration. Dogs and cats can ingest coccidia from licking infected ground or cleaning themselves after coming in contact with infected ground or feces, or by eating an infected host itself such as a mouse or squirrel. Coccidia can be diagnosed by a fecal exam; Albon is generally prescribed for treatment. GIARDIA is another protozoan intestinal parasite that infects many animals (dogs, cats, rabbits, wild birds, squirrels, rats, raccoons) and man. Giardia lives and reproduces in the small intestine of host animals. The living stage of Giardia produces inactive cysts which are passed from the host in fecal matter. The cyst is durable enough to withstand temperatures of -13 degrees C. Other animals can accidentally ingest cysts by licking the ground, each other?s coats, or eating feces. Giardia causes diarrhea and fluid loss. Metronidazole is generally prescribed as treatment. TAPEWORMS are passed to the dog by ingestion of the intermediate host of the tapeworm - the flea. Once ingested the intermediate host releases the intermediate stage of the tapeworm into the GI of the dog where the parasite matures to an adult in the small bowel. Eggs are shed to the environment from the GI of the dog in small segments that look like pieces of rice. Flea control is a good prevention, and Cestex, Droncit or Drontal are generally used for treatment. ROUNDWORMS (Toxocara) are very common. Roundworm larvae become encysted in the dog`s tissues and can be passed through the placenta from mother to pup. The majority of puppies are infected with roundworm and require treatment. Roundworms in puppies can cause abdominal pain and diarrhea; occasionally as the larvae migrate through the organs into airway passages, they can cause pneumonia. Regular worming of puppies is recommended. Heartworm medication for adult dogs will also control any roundworm infection in adults. HOOKWORMS can infect the dog either by ingestion or penetration of the skin by the larvae. The larvae circulate through the blood stream into many tissues and finally settle in the intestine where they mature. They attach to the intestinal lining and suck blood. Hookworm infection can cause marked anemia, intermittent bloody diarrhea, dull dry hair coat, and weight loss. Untreated infection in puppies can be severe and require intravenous therapy. Regular worming of puppies is recommended. Heartworm medication for adult dogs will also control hookworm infection. Resources Veterinary Information Service Mar Vista Animal Medical Center Vet Online Professionals |