The Mundari of Central Equatoria, the Kara and Suri of the Omo have many traits and traditions in common. They often practise transhumance, moving their herds in response to rains and fresh grazing. They often take blood from their cows, sometimes to mix with milk and sometimes to simply drink it from a calabash. The Mundari gather the fresh dung each morning, dry it and use it to fuel their fires. The ash from the fires is then used to massage their Ankole Watusi cows to mitigate against bites from tsetse flies and mosquitoes. They also veneer themselves with ash for the same reasons, hence they appear ghostly as they herd their cattle and fade into the nebulous haze of smoke generated by the fires.