Adult Nile crocodiles are dark olive on top, the belly is uniformly porcelain-colored. The juveniles are light olive and dark spotted and banded. The coloration of crocodiles is strongly influenced by the substances dissolved in the water. Crocodiles are found in the border rivers Kunene, Okavango, Zambezi and some waters of the Caprivi. Crocodiles of the Kunene have a reputation for being very aggressive. Crocodiles usually lie in wait for their prey under the surfaces of rivers or waterholes where the animals arrive to scoop and remain unnoticed due to the flat profile of the head and the almost silent locomotion. The victim is then jumped, grabbed in a jump, dragged into the water and drowned. Among other things, zebras, antelopes, porcupines, young hippos and other predators such as hyenas or lions have been reported to have been preyed on by Nile crocodiles.
Carrion is also part of the Nile crocodile's diet. Large prey animals are pulled under water, drowned and kept there under overhangs and in caves until they decompose and then consumed. The dead prey is grabbed with the teeth and by quickly turning the crocodile (death roll), pieces of meat are torn out of the carcass and devoured.
Crocodiles have enormous power, even in strong currents large crocodiles are able to remain motionless in the water. Nile crocodile females are not territorial. The males form territories and stubbornly defend a section of shore against other males. They regularly swim the boundaries of their territory, driving away invaders. Occasionally there are fights.
Eggs are laid on land and buried in the sand. After 84–89 days, the juveniles announce their hatching in the eggs with frog-like sounds. The female then digs up the nest again and carries the hatchlings into the water in her mouth. In the first months of life, the young animals always stay close to their mother, who guards them.
In order not to lose the trophy, crocodiles must be shot ashore with an instantaneous killing shot. To do this, the very small brain must be hit. For this purpose, a fast, precise shooting caliber of 6 - 7 mm is recommended. The crocodile must be hit sideways behind the eyes when lying on sandbanks in the sun.
The response is carried out according to the length of the crocodile.
