Frogs are amphibians. They lay their eggs in the water, where tadpoles hatch, which live in the water until they turn into an adult frog.
Tadpoles are more like fish than frogs, they have ribbed tails and breathe through their gills.
Although frogs live on the ground, their habitat should be near swamps, ponds or in wet places, because they will die if their skin dries out.
Frogs breathe through their nostrils, and also absorb some of the air through their skin.
Frogs use their sticky tongue to catch and swallow food.
Frogs can look forward, sideways and up at the same time. They never close their eyes, even when they are asleep.
It is noteworthy that frogs actually use their eyes to swallow food. When the frog blinks, its eyeballs press on the upper palate, helping to push food into the throat.