Black wildebeest
Where it lives alongside the blue wildebeest, the two species can hybridise, and this is regarded as a potential threat to the maintenance of the species. The black wildebeest was once very numerous and was present in Southern Africa in vast herds, but by the end of the 19th century, it had nearly been hunted to extinction and fewer than 600 animals remained. A small number of individuals was still present in game reserves and at zoos, and from these, the population was rescued.
Black salamander
The black salamander is found in forested areas and grassland in the coastal ranges of south western United States mostly at elevations below but occasionally up to . It has several disjunctive populations. The southernmost population is in the Santa Cruz Mountains. North of this there is a gap where it does not occur and then another population in northern California and southern Oregon. The Black Salamander has a long tail. It has a lot of spots on its tail. In the southern part of its range it hides under logs and rocks in damp places and stream banks in woodland. Northern populations are found in more open country and in the far north of its range it is found among mossy rocks and scree.