The moor frog certainly cannot turn into a prince with true love’s kiss. But this seemingly uninteresting amphibian is capable of something quite spectacular – it changes color from a boring brown to an azure blue, just to be able to distinguish between genders during mating season. The ‘before’ and ‘after’ pictures are really quite unbelievable – it looks they’re two different frogs.
A fully grown adult male moor frog is up to seven centimeters long and reddish-brown in color. But every year, between March and June, the frog exhibits chameleon-like tendencies. During this period, the frogs emerge from their winter hibernation and are naturally in the mood to procreate. They populate the ponds in the lowlands of Central and Southern Europe, completely filling the air with their mating calls. The sounds they create are similar to the noise of air released from a bottle under water.