A group of frogs is called an army of frogs. The earliest known frog appeared during the late Jurassic period, about 190 million years ago. These fossils show that the skeletal shape and body plan of the frog has remained almost unchanged. Ranidaphobia is the fear of frogs. Bufonophobia is the fear of toads.
Most frogs do in fact have teeth of a sort.
Toads, however, do not have any teeth. Many species of frogs and toads can live, on average, for somewhere between four and 15 years.