The common frog, also known as the European frog or simply the frog, is a well-known amphibian that is found throughout Europe. There are several synonyms for the common frog, including the grass frog, marsh frog, and moor frog. In some areas, it is also referred to as the brown frog or green frog, depending on the coloration of its skin. The common frog is an important part of the ecosystem, serving as both predator and prey. It plays a vital role in keeping insect populations in check and serves as a food source for a variety of other animals, including birds and larger predators like foxes and badgers.