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.
Tapeworms are flat, segmented intestinal parasites of the cat and dog. observing the white mobile tapeworm segments in the feces or crawling around the anus.
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.