Toads spend most of their time on land, while frogs spend most of their time in the water. Tailed frogs looks similar to toads because of their hard skin. A tailed frogs "tail" is really an organ they use to release sperm in fast-moving waters. They are the only frogs with this organ. The genus "Eleutherodactylus" are terrestrial frogs. This means that they lay eggs on land. Spadefoot toads make crying sounds during a rainstorm.