Insect

Studies show that bees can be trained to distinguish between different human faces by identifying the distinct patterns formed by facial features. This capability is surprising given their tiny brains.

When a butterfly lands on a potential food source, specialized chemoreceptors on its tarsi (feet) determine if the plant is suitable for laying eggs or if nectar is present. This allows them to 'taste' before feeding.

When threatened, these beetles mix two chemicals, hydroquinone and hydrogen peroxide, in a special combustion chamber in their abdomen. The resulting exothermic reaction produces a scalding, foul-smelling spray that deters predators with remarkable force.