Although Nile crocodiles resemble armored tanks with huge, teeth-filled mouths, these reptiles are unusually attentive parents. Large, lizard-shaped reptile with four short legs and a long muscular tail. The hide is rough and scaled. Juvenile Nile crocodiles are dark olive to brown with darker crossbands on tail and body. Adults are uniformly dark with darker crossbands on tail. Size averaging approximately 5 m (16 ft.) with maximum size of roughly 6 m (20 ft.) Weight adults of both sexes may easily exceed 225 kg (500 lbs.) Diet Up to 70% of the adult diet is fish. Other prey items may include zebras, hippos, porcupines, pangolins, and migrating wildebeest. Here is a Nile Crocodile captured in Ngorongoro National Park in Tanzania.