Frogs are small, tailless amphibians with smooth, moist skin and long hind legs built for jumping. Found in diverse habitats like ponds, forests, and wetlands, they play a crucial role in ecosystems by controlling insect populations and serving as prey for larger animals. Frogs undergo metamorphosis, starting as aquatic tadpoles before developing into adults. Their permeable skin allows them to absorb water and oxygen but also makes them sensitive to pollutants, marking them as indicators of environmental health. Known for their distinctive croaking calls, frogs communicate to attract mates and establish territory. Some species have toxic secretions for defense, while others rely on camouflage. With over 6,000 species worldwide, frogs exhibit remarkable diversity in color, size, and behavior, making them fascinating subjects in nature.