First, the dog will ingest a host that is harboring tapeworm eggs, most of worm infestation is if your dog scoots his anus across the ground.
The most common tapeworm affecting dogs and cats is called dipylidium caninum. segments can sometimes be seen stuck to the hair around the dog's anus.
Tapeworms are flat, segmented intestinal parasites of the cat and dog. There are several types of tapeworms, but the most common tapeworm species observed in dogs is Dipylidium caninum. Unlike other intestinal parasites, dogs cannot become infected by eating fertilized tapeworm.
Tapeworms are a parasite in the intestine and are typically spread by and actual sight of the tapeworm in stool, near the anus, or in the fur.
Although cats and dogs are rarely ill as a result of a Dipylidium tapeworm infection, the proglottids can sometimes be seen crawling near the anus or on the .