Frog Reproduction | 台北市立動物園資訊網

2008年2月5日—Inalmostallfrogs,eggfertilizationhappensoutsidethefemale'sbodyinsteadofinside.Thefemalereleaseshereggsandthemalereleaseshis ...

Most people learn about the basics of frog reproduction in elementary school. Frogs lay eggs in water[1], and the eggs hatch into tadpoles that grow into frogs. Only about half of all frogs follow these exact steps, but there are a few rules of thumb about frog reproduction. All frogs reproduce sexually[2], and all hatch from eggs.

In almost all frogs, egg fertilization happens outside the females body instead of inside. The female releases her eggs and the male releases his sperm at the same time. In order to make sure that the sperm reach the eggs, the male and female get into a mating posture called amplexus. The male climbs onto the females back and clasps his forelegs around her middle. Frogs can stay in amplexus for hours or even days as the female releases as few as one or as many as several hundred eggs.

Sometimes, its easy to tell male frogs from female frogs. Many specie...