Worms I mean not guts. If I accidentally eat an infected flea that I been biting at, I will get tapeworms. The worms then grow in my gut and the eggs get washed out in my feces. Then another Flea comes by and picks through my waste and eats the eggs and the whole thing starts all over again. And if not treated in time can cause death.
Signs are poor growth in puppies, vomiting and colic.
They are 1 an a half to 3 inches long and live in our large intestines. With there mouth they cut the intestine and eat the blood.