Pygmy hippopotamus population that freely breeds in zoos around the world. Between 1970 and 1991 the population of pygmy hippos born in captivity more than doubled. The survival of the species in zoos is more certain than the survival of the species in the wild. In captivity, the pygmy hippo lives from 42 to 55 years, longer than in the wild. Since 1919, only 41 percent of pygmy hippos born in zoos have been male. While the common hippopotamus was known to Europeans since classical antiquity, the pygmy hippopotamus was unknown outside its range in West Africa until the 19th century. Due
Cloud-forest pygmy owl prone to natural fragmentation. Thus, like other species that are tied to cloud forest, it is known only from a very small range. It is found in low densities in the canopy and middle stratum of forest. Nevertheless, it can descend into the understory for feeding. In common with other species of pygmy owls, this species is quite diurnal, and consumes both invertebrates and small vertebrates. Nevertheless, owing to its small size and retiring habits -generally being perched in dense evergreen trees- it is not often noticed. The cloud-forest pygmy owl breeds principally between February and June. This fact allows