Dyeing poison dart frog
The adult male frog sits on the ground or on leaves and sings for the female frog.  The female frog comes near the male frog and touches his nose.    Then the male leads the female to a body of water, where she lays 2 to 6 eggs.  Usually, the male frog guards the eggs until they hatch.  Sometimes the female frog does.  The eggs take 14 to 18 days to hatch into tadpoles.  Then the male and female frogs carry them away.  They take the tadpoles to small bodies of water, for example in the leaves of a bromeliad plant.  The frogs take them very far away.  Sometimes the parent frogs will walk right past other pools of water to get to ones further away.  Scientists think it is good for the frog's survival to spread out over a wide distance so the new frogs will not have to fight each other for food as much.