While dragons are non-existant today, research finds that the Komodo dragon has the capability to kill their prey with venom. They secrete venomous proteins in their mouths, venom but to a degree basically. The Komodo is also the world's largest living lizard, or perhaps "dragon".
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The camera obscura later became a popular tool during the Middle Ages and the Renaissance, particularly after inventors began using biconvex lenses to brighten its images. Astronomers used it to protect their eyes while observing the sun and solar eclipses, and artists employed it as an aid in portraiture and landscape painting.
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