Butterflies Taste With Their Feet

Humans rely on our tongues to taste food, but butterflies take a very different approach. While they do have a few taste receptors on their proboscis — the long, straw-like mouth they use to sip nectar — most of their taste sensors are located on their feet. In other words, every landing is also a taste test.

When a butterfly touches down on a flower, leaf, or even a patch of mud, specialized receptors on its feet instantly sample the surface. These tiny taste buds help butterflies locate nectar-rich flowers and, just as importantly, determine whether a plant is suitable for laying eggs. After all, once the eggs hatch, hungry caterpillars will need a nutritious first meal, so choosing the right plant can make all the difference.