The Red lechwe is not actually indigenous to South Africa. They originally come from Namibia, but as semi-aquatic mammals they are happy as long as there is water around, which is why Inverdoorn has been able to introduce them into the reserve, and one of the dams has even been named after them. They love the water and it forms a great part of their existence.
When the Red lechwe is startled, it will jump into the water so that predators, such as lions and leopards, cannot follow suit. The lechwe's hooves have a semi-webbed piece of skin which prevents them from sinking into the mud. Their back legs are slightly longer and more developed - this adapatation assists with jumping in the water. The lechwe's glands produce oil which makes their skin waterproof and thus they are comfortable in water. The oil also results in the taste of their meat being tainted, so if anyone offers you lechwe biltong, it would be best if you turned up your nose. This is also a handy defense mechanism against predators, because the poor taste means they will only prey on these antelope as a last resort. You can distinguish between the sexes, as the males have horns and the females do not. They are grazers and, unsurprisingly, will sleep next to the water.