Reproduction: Males and female wood frogs gather in ponds to breed early in the spring, even before the ice is gone. The only way a male can tell if another frog is a fertile female is to clasp it. If he discovers the frog he has clasped is thin, he knows it's either another male or a female that has already released her eggs. After mating, the female lays a blob of 1,000 to 3,000 eggs. Egg masses are often laid communally and hatch within three weeks, depending on the temperature. Tadpoles take about six to nine weeks to turn into frogs. (MN DNR, 2022)