The world's biggest frog is the goliath frog from Cameroon in West Africa. Their body can be one-foot long. The eggs of the marsupial frog are laid in a brood pouch on the mothers back and the young hatch out in a zipper-like fashion from the pouch. In the Seychelles, there is a male frog that carries its young around on its back until they become adults. This fertilizer is spread on fields in the spring when frogs are migrating.
Frogs suffer a massive toxic attack if they come in contact with it.
People who study frogs and toads are called herpetologists. Herpetology is the study of amphibians and reptiles. Frog bones form a new ring every year when the frog is hibernating, just like trees do. Scientists can count these rings to discover the age of the frog. The wax frog retains moisture in dry weather by producing wax from its skin and coating itself in it.