Amphibians reproduce with either external or internal fertilization. The loud croaking of frogs is their mating call. Amphibians lay their eggs in water so that they won't dry out. Their eggs are usually covered in a jelly-like substance. The jelly helps keep the eggs damp and offers protection from predators.
They tend to lay a large number of eggs in the same place at the same time, which helps to assure that the eggs will be fertilized and at least some of the embryo will survive. Once the eggs have been laid, most amphibians are done with their parenting. Mating for amphibians usually occurs in freshwater