The dog tapeworm is the trigger of cystic echinococcosis, a disease that is life-threatening both for the animal intermediate hosts and for humans. The larval stages settle mainly in the liver, but also in the heart, lungs and other organs. In dogs as the main host (end host), in whose intestine the tapeworm grows, this disease, in contrast to the other tapeworm diseases of the dog, usually has no clinical symptoms.
Trichinella spiralis is a roundworm and the most important representative of the Trichinen in Central Europe. It occurs worldwide, but it is not very important in tropical areas. T. spiralis causes trichinellosis, which is now rare in Central Europe due to trichineal examinations. In principle, all mammals are susceptible, but natural infections are most likely in carnivores and omnivores such as the fox and the pig. In Central Europe, the red fox is considered the most important reservoir of the pathogen. Infection in humans is notifiable in Germany and Switzerland.