Frog connect the dots online, all your favorite cartoon stars, animals and more, dot to dot games. There are more than 4,000 known species of frogs, including toads. The distribution of frogs ranges from tropic to subarctic regions, but most species are found in tropical rainforests. The life cycle of a frog starts with an egg, еggs hatch and continue life as tadpoles, аt the end they transition into adult form. Compared with the other two groups of amphibians, (salamanders and caecilians), frogs are unusual because they lack tails as adults and their legs are more suited to jumping than walking. They range in size and come in a rainbow of colors and patterns. The African Giant is the largest, it can grow to 26 inches long. African clawed can live 15 years, Bullfrogs can live 30 years. The earliest known frog appeared about 190 million years ago.