Etosha is home to 114 mammal species, over 350 bird species, 110 reptile species, and 6 cat species. It's often described as "Big Four + Cheetah" territory; lion, leopard, elephant, and both black and white rhino are all present, but the African buffalo is absent from the park.
The population numbers are impressive. Over 500 black rhinos roam the park — one of Africa's strongest populations. The lion population sits at 300-400 individuals, and roughly 2,500 elephants make Etosha their home. Cheetah sightings are particularly good here, as the open plains around the waterholes give you unusually long sight lines.
Beyond the headline species, watch for black-faced impala, an endemic subspecies found only in this part of Namibia and a genuine Etosha specialty. Springbok are the most numerous antelope, and you'll see vast herds of them across the open plains. Gemsbok (oryx), Namibia's national animal, and the emblem on the country's coat of arms, are also abundant.
The birdlife is extraordinary, especially during the wet season (November to April) when migratory species arrive. When conditions are right and the pan floods, flamingos arrive in staggering numbers.
The earliest recorded flamingo nesting research was carried out in Etosha in 1971, when over a million birds congregated on the pan, with more than 80,000 nesting. In 1969, the famous "Operation Flamingo" saw thousands of stranded chicks rescued when the pan dried up too quickly (Denker, Namibia Nature Parks).