A fly does some of its digesting outside its body before it even eats any food.
Nutrients and energy contained within dead animals are repurposed and repackaged into living, breathing insects.
The moment a chick hatches from its egg, maggots burrow into its skin to drink its blood, usually killing it. But scientists have found a way to stop the blood-sucking parasites.
They may make you feel squeamish but maggots have some incredible medicinal benefits.