In what month did frogs start croaking?

Frogs begin to croak in March and April. Frogs usually croak in rainy days and breeding season. When it was about to rain, the frog's skin became active after being fully wet due to the increase of water in the air, so it began to sing; Frogs in breeding season attract the opposite sex by chirping, thus achieving the purpose of courtship.

Frogs belong to a common class of animals in China and can croak. However, frogs don't make such calls in all seasons. For example, in winter, frogs will go to sleep because of the low temperature around them, and naturally they will not sing. In other seasons, frogs sing at different frequencies. In summer, frogs are more likely to make more frequent calls. Frogs make sounds very easily, especially after rainy days. In addition, during the breeding period of frogs, adult frogs will also sing, with a loud cry.