A cestode is a type of parasitic flatworm, commonly known as a tapeworm. These organisms live in the intestines of their hosts, which can include humans and various animals. Cestodes have long, segmented bodies that can grow to impressive lengths, sometimes reaching several meters. They absorb nutrients directly from the host's digestive system, which allows them to thrive without a mouth or digestive tract. Cestodes reproduce by releasing eggs that are expelled in the host's feces. When these eggs are ingested by another animal, they can develop into larvae and continue the life cycle. Common examples of cestodes include the beef tapeworm and the pork tapeworm, which can cause health issues in humans if ingested through undercooked