https://c8.alamy.com/comp/XC1H5K/hookworm-head-computer-illustration-of-the-head-of-the-parasitic-hookworm-ancylostoma-duodenale-this-is-one-of-the-commonest-causes-of-hookworm-infestation-in-humans-particularly-in-sub-tropical-regions-such-as-north-africa-and-india-the-worms-head-contains-several-tooth-like-structures-with-which-it-clings-to-the-bowel-of-its-host-hookworms-also-infect-dogs-and-cats-human-infestation-begins-with-larvae-penetrating-the-skin-usually-by-burrowing-into-the-feet-of-a-person-and-entering-the-bloodstream-the-larvae-then-migrate-throughout-the-body-particularly-the-small-intestine-XC1H5K.jpg