Rhinoceros sperm
The African rhinoceros’ crisis: What can reproductive biologists do? Fig. 1: African white rhinoceros shortly after darting (horns have been cut so that poachers may be less interested). There are two species of African rhinoceros, the black rhinoceros, Diceros bicornis, and the white rhinoceros, Ceratotherium simum (Fig. 1). South Africa [...]