The South African mammal in the crossword is the MEERKAT, which is a small mammal that lives in the Kalahari Desert in Botswana, South Africa, and Namibia. Meerkats are social animals that live in large groups and have a complex system of communication. They are known for their upright posture and long tails. Meerkats are omnivores, eating insects, small reptiles, and plants. They are also known for their ability to stand on their hind legs and look out for predators.