Ben Fogle and Kate Humble kick off the first episode of daily summer specials by welcoming more animal arrivals than ever before. This episode features the birth of Africa's most endangered cat. If the cameras can capture this incredible moment, it would be the first time the keepers have ever seen a live cheetah birth. Jean Johansson helps to settle in a gaggle of new penguins, but will they make a splash with the rest of the colony? Meanwhile, one of Africa's largest antelopes checks into the park, but at just a quarter of the size of his predecessor bull, the keepers are on tenterhooks as he meets his new, much larger lady friends for the first time.