Kassina senegalensis, also known as the Senegal running frog, along with many other common names, is a species of frog native to much of Africa. It is a small and solidly-built species, with large eyes. Most of the body is greyish-black, but there are brown bands and spots on certain parts. They can be found in many types of habitats, such as shrublands, grasslands, and wetlands, at heights as great as . Their breeding occurs in water, where eggs are laid in various locations and fertilised one-by-one. They eat many different prey items, and use skin secretions to avoid becoming prey themselves. Their population is assumed to be very large and not in any immediate danger. Taxonomy Kassina senegalis was first described in 1841 by André Marie Constant Duméril and Gabriel Bibron as Cystignathus senegalensis. Their description came from specimens which had been collected from ponds in Senegal, sent to them by an individual identified only as Mr. Heudelot. The genus Cystignathus was split into several new genera in 1853 by Charles Frédéric Girard, with senegalensis ending up as the only species of the newly erected genus Kassina. Six other species names, four alternate combinations, and eight proposed subspecies of this species have been all been subsequently synonymised with the latest accepted name. Description Senegal running frogs are relatively small and stocky. The vomer teeth of the upper mouth are arranged in two small groups. The tongue is heart-shaped. The Eustachian tube is quite small, and the eardrums are indistinct from the layer of skin covering them. There are four fingers, completely free of webbing; in size, the third is longest, followed by the fourth, then the second, then fourth. The toes are also unwebbed. The eyes are large and somewhat protruding, while the head is shaped like an equilateral triangle, rounded at the tip. The entire body is smooth. In colour, Kassina senegalensis is greyish black, with brown longitudinal bands and spots of the same colour on various locations of the body, including the ears and eyes. They range in size from . Males are a little smaller than females, and have chocolate-coloured vocal sacs that can grow nearly twice their normal size during calling. Eggs are about in diameter; this includes the jellylike membrane that covers them. Identification of tadpoles can be difficult, as there is much variation among them, a trait shared with other species in the