National Geographic
Menu

Tag archives for tapeworms

Your Weird Animal Questions Answered: Animal Anatomy

Does a narwhal use its tusk in defense? Is a dog’s nose really supposed to be cold and wet? Learn more about animal anatomy in this week’s column.

Tapeworm Eggs Found in Ancient Shark Feces

A cluster of tapeworm eggs have been discovered in 270 million-year-old fossilized shark feces, suggesting that the intestinal parasites are much older than previously thought.