4. Maggots

When all other treatments fail and people face losing limbs and even life, these creepy crawlers enter the picture to do the job that modern medicine sometimes cannot.

These animals that have improved human medicine are small, voracious eaters that love to feast on dying and diseased flesh. It definitely sounds nauseating, but maggots’ gross idea of a great meal is a blessing for those suffering from chronic infections and wounds.

Since maggots can clean a wound better than any surgeon with a knife, experts call them “micro-surgeons”. These animals that have improved human medicine used to be standard for wounds in the 20th century, but with the rise of antibiotics, they fell out of common use.

Keep reading to discover other animals that have improved human medicine!