The majority of frogs do not care for their offspring. Each female may lay thousands of eggs each year. Only two or three of these will actually survive to sexual maturity.
There are exceptions to this rule. In the case of many African bullfrogs it is the father, not the mother, who looks after the tadpoles and froglets by ensuring they have water and chasing away predators when he can.
The poison dart frogs of central and south American rainforests may also care for their offspring. Many species place their tadpoles in the water-filled centres of bromeliads and other similar plants. Because there is little food in such a small amount of water, the female may return several times as the tadpole develops and lay an unfertilised egg for it to eat.