6000 animals were resettled into the park over the course of the early 1980s with Operation Genesis, which was featured on a two-part episode on Wild Kingdom in 1981. It was the largest game resettlement program in the history of the country. The 6000 animals were released into the quarantine area of 10 km2 in groups and after a few weeks the fences were dropped. As the purpose of the park was a feeder for other parks no lions or cheetahs were brought in. However, leopards were naturally present as were brown hyena and mountain reedbuck. Currently, Pilanesberg has the highest concentration of hyena of any game park in the world. Also brought in was a family of elephants. As no mature bulls were brought in as they were too large, the young bulls caused a bit of havoc and killed 17 rhinoceroses. The reason for this was there was no parental care and the young bulls came into adolescence at too young an age. However, by this time the transport techniques had improved so 6 older bulls were brought in from the Kruger National Park. This suppressed the adolescence problem. The young culprits were all shot.
