Nile crocodiles occurred in the Nile delta
Zarqa River (Jordan) and recorded by Herodotus who inhabited Lake
Moeris. In Madagascar, crocodiles occur in the western and southern
parts of the Sembirano in Port Dauphin. Until recently, many permanent waters
in the Sahara still housed relict populations. Found in East Africa,
particularly in rivers, lakes, wetlands and reservoirs. The species was probably widespread in West Africa, but these populations are now recognized as a distinct species, the crocodile desert.
Nile crocodiles have a dark bronze colouration above, with black spots on the back and a
dirty purple on the belly. The sides are yellowish green dark spots are
arranged in diagonal stripes.
Like all crocodiles, the Nile crocodile is a quadruped
with four short legs wide apart, a long tail and powerful, scaly skin
with rows of bony shields. Along the back and tail and powerful jaws
must protect the nictitating membranes around the eyes and tear ducts to
rinse your eyes with tears.
The belly is yellow-green, and makes
high-quality leather. Smaller specimens can gallop, crocodiles
are even more impressive explosions capable of reaching a speed of only
12 to 14 km / h (7.5 to 8.7 mph). The skin has a number of poorly
understood organs integumentary (ISO), which can react to changes in
water pressure. The bite force of an adult Nile crocodile has been exercised by Dr. Brady Barr demonstrated that measure 5,000 lbf (22 kN).
On each side of the mouth, there are five teeth in the front part of the upper jaw (premaxilla), 13 or 14 in the rest of the upper jaw (OK) and 14 and 15 on each side of the lower jaw (mandible). Out of the water can crocodiles competition from other predators of the savannah dominant, particularly cats such as lions and leopards. Occasionally both big cats and crocodiles and prey are hunted each other, depending on the size, when food is scarce normal The Nile crocodile is the largest crocodile in Africa and is sometimes regarded as the second largest after crocodile saltwater crocodile.
The male crocodile usually
measure from 3.5 to 5 meters (11-16 feet) in length, but very old,
mature ones can grow up to 5.5 meters (18 feet) or more. Like all
crocodiles they are sexually dimorphic, with males being larger up to
30% of women, although the difference. Even in some species, such as the
saltwater crocodile Mature Nile crocodiles measure 2.4 to 4 m (7 ft 1
in 10-13 ft). Weight typical Nile crocodile is 225-500 kg (500-1100 pounds), although males of large size up to 750 kg (1,700 lb) can be in the crowd.