The reproduction of the nimba toad is known, unlike most of the remaining toads, for being a vivid. The females of this species feed the fetus for 9 months in the uterus. After several studies on this toad, a group of German researchers has summarized all their 40-year work. The research has been published recently in the journal Zoosystematic and Evolution. The authors not only illustrate the reproductive systems of females and males and the special development of the fetus, but also explain the influence of the medium on the type of reproduction. It seems that its special reproduction is due to the evolutionary distribution caused by the changing environment and lack of water.