human
I'd like to know more about the different kinds of frogs.
assistant
Frogs are a very diverse group of animals that can be found in almost any habitat on Earth. They range from tiny tree frogs to giant bullfrogs, and they come in many colors and shapes. There are over 5,000 species of frogs around the world, and they are divided into two main groups: the anurans (which include tree frogs, toads, and other amphibians) and the caecilians (which include legless burrowing frogs). Anurans have lungs and external gills for breathing underwater, while caecilians do not have lungs or external gills.