The Kiwi, national bird of New Zealand, can't fly, lives in a hole in the ground, is almost blind and lays only one egg each year. Yet is has survived for 70 million years. Domestic cats, long considered a reservoir for H. pylori, the bacterium that causes most ulcers, have been given a clean bill of health by recent studies. The difference is attributed to reduced levels of iron following blood donation. Boanthropy is a disease in which a man thinks he is an ox.
Human bones can withstand stresses of twenty-four thousand pounds per square inch.
Human thighbones are as strong as concrete.