Of the primate family, olive baboons (Papio anubis) and vervet monkeys (Chlorocebus pygerythus) are common, less so is the secretive blue monkey (Cercopithecus mitis) which was thought to have become extinct in Akagera until recently. Bushbabies or Galagos (Galago moholi and Otolemur crassicaudatus) are often seen on night drives. Of the large predators only leopard (Panthera pardus) and hyaena (Crocuta crocuta) can still be found in the park. Although lion once occurred throughout Akagera, the population have been wiped out mostly through poisonings by cattle herders seeking to protect their livestock. A reduction in the prey-base due to heavy poaching would also have contributed to their demise. Smaller predators are still well represented with healthy populations of several mongoose species, viverrid species, serval (Leptailurus serval) and side-striped jackal (Canis adustus). Plans are underway for the reintroduction of lion in 2014, and black rhino in 2015 which will restore Akagera’s ‘Big 5’ status.