11. Tapeworms

They’re nasty and creepy, and nobody likes them, but tapeworms continue to infect and kill approximately 700 unfortunate people each year. Their murder weapon is the disease cysticercosis, which they spread through human excrement (you’ll see this is a common theme in some of the deadliest animals).

These deaths occur worldwide, but mostly in the rural areas of developing countries, because it’s linked to poor hygiene. People get the disease from swallowing eggs that came from contaminated food or fingers. If that wasn’t gross enough, you should know that it’s prevalent wherever pigs eat human feces.