The length of the COMMON FROG may exceed 10 cm. Its hind limbs are shorter than those of the agile frog; when the shins are bent forward at the knee-joint the heel-joint reaches the level of the eyes. Males have remarkably powerful and thick front legs. Its snout is blunt. Its brown base colouration may have a greyish, yellowish or reddish shade. It may also have some black spots on the back or a mottled dorsal pattern. It also has the characteristic stripe of brown frogs across the eyes. The hind limbs have dark transversal stripes like those of the agile frog. Common frog has a darkly mottled belly and black blotches between the sides and the belly. Around these blotches sulphur-yellow or brick-red areas can be found at the flanks, creating a colourful pattern.
More information: website of MME ARCG.