As larvae develop teeth, they capture larger prey. Hylid frogs eat increasingly larger preys, even during postmetamorphosis. The diet of anurans living in West Africa vary greatly throughout the year. Among the thirteen species of anurans living in Amazonian Peru, the difference in food was greatest during the dry season. These differences are indications of the availability of prey.
Some animals are dormant during the dry season.
In some amphibians, the selection of larger prey is likely when moisture conditions are heavy. Amphibians vary considerably in their hunting practices. The vast majority of anurans and salamanders use vision to hunt prey. Once a prey is sighted, it may be followed for a short distance any then captured. Sight is also important in identifying kinds of prey, such as those with a large energy content and or that may be distasteful or harmful.