The scolex (head of the tapeworm) embeds itself into the wall of the small intestine where it begins to grow, and shed new eggs. The life cycle is complete when the canine eats the raw infected brain, spinal cord or offal contaminated by the fluid from the ruptured cyst.The Coenurosis cerebralis matures into a thin-walled fluid-filled cyst about 5cm in diameter.The onchosphere develops into a metacestode larval stage called Coenurosis cerebralis.In goats the cysts can form in subcutaneous and muscular sites as well as the brain and spinal cord The onchosphere penetrates the mucosa and is carried via the blood stream to the brain or spinal cord.Each egg contains an onchosphere which hatches and is activated in the small intestine.The intermediate host is infected through ingestion of T.multiceps infection on a farm is significant as it confirms an unbroken sheep and dog life cycle, which in turn implies the existence of more important tapeworms such as Echinococcus granulosus. This dog / sheep tapeworm usually infects sheep and forms cysts in the lungs and liver, which if consumed by humans will cause a very serious disease that is very difficult to treat. Canine hosts shed tapeworm eggs in their faeces which contaminates the pasture for the intermediate host to ingest. Dogs and other canines such as foxes, coyotes and jackals are the definitive hosts of the tapeworm Taenia multiceps.
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