Cowan's Mantella, Mantella cowanii, is a species of Mantella native to northeastern Madagascar. It is closely related to M. nigricans, although the two species do not look similar. M. cowanii is a highly toxic Mantella and as a result it is brilliantly coloured. It is threatened by habitat loss, chytridiomycosis, and pollution. M. cowanii is occasionally kept as a pet by herpetoculturists.