Nile Crocodile was revered for strength and was used to protect the pharaohs and priests of ancient Egypt. The Egyptians revered animals, but worshiped not the essence of the very essence, but the obvious feature inherent in the appearance. The god of power with a crocodile head was in high esteem, and was called the Sobek. In honor of the Sobok in the ombo 200 BC.e. built a huge temple, where people worshiped him as the power of the soul.
Nile crocodile is lighter than other types of crocodiles found in the world, but it is called black crocodile.
Nile crocodile is a sexually dimorphic animal, which means that males and females have physical differences. Males of the Nile crocodile are 25-35% more than females, but females are rounder of males of the same length. Males are territorial and aggressive animals. On average, Nile crocodile lives up to 70 years even in nature. However, in suitable conditions will live for more than a century.
Crocodiles continue to grow while they live. Adult males from 2 to 5 meters long; The largest weigh about 700 kg. The upper limit of age and size is still unknown. There were confirmed records of large wild crocodiles, more than 6 meters long and weighing 900 kg.
Appearance and features
Nile crocodiles have greenish-yellow scales with brown or bronze glare. Their exact coloring depends on the environment. Crocodiles living in fast rivers have light colors living in dark swamps darker; their bodies are camouflage, so they, as a rule, adapt to the environment.
Delicious teeth have 64 68 fangs on both sides of the jaw. These teeth have a conical shape, as if sharpened. Little crocodiles have an egg tooth that falls out after the cub breaks through the egg shell.
The mystery of the Nile crocodiles is that they have senses throughout the body, the principle of which researchers do not fully understand. Everyone agrees that these organs detect smells, vibrations of prey, but the features have not yet been studied.
Where the Nile crocodile lives
Nile crocodiles survive in salty waters, but prefer fresh reservoirs of central and South Africa. Like all reptiles, the Nile crocodile is a coldblooded creature and depends on the environment to maintain normal internal temperature. It warms up in the sun when it is cool, but when the temperature is high, it flows into the process similar to a winter hibernation.
Crocodiles reduce heart rate and sleep in harsh seasons. Caves dug by crocodiles along the banks of rivers, colder than the temperature outside. In the heat, the Nile crocodile finds refuge in the caves and reduces the frequency of breathing to about one breath per minute; body temperature drops, heart rate decreases from 40 beats per minute to less than five. In this state, the crocodile consumes very little energy, which allows it to live for more than a year without food.
What is Nile crocodile eat
Crocodiles eat everything that moves. Their main food is fish. But they also kill birds, reptiles, otters, antelopes of the GNU, zebr, hippo, eat other crocodiles. These are real predators.
Crocodiles prefer living production. When they are offered minced meat or live food in captivity, they attack food that moves and leave the minced meat for dessert.
Features of character and lifestyle
Features of crocodile behavior have little studied. It is believed that in the populations of crocodiles there is a strong social hierarchy, which affects the order of feeding. Lowranking animals eat less when dominant individuals are located nearby.
Propagation of Nile crocodiles
This species digs up to 50 cm nests in sandy shores, a few meters from the water. The time of nesting behavior depends on the geographical location, occurs during the dry season in the north, at the beginning of the rain season further south, usually from November to the end of December.
Females reach puberty with a body length of about 2.6 m, males about 3.1 m. Females lay off 40 to 60 eggs in the nest, although this number depends on the population. Females always remain near the nest. The incubation time is from 80 to 90 days, after which the females open the nest and carry the cubs in the water.
Despite the vigilance of the female during the incubation period, a high percentage of nests I dig hyenas and people. This predation occurs when the female is forced to leave the nest to cool the body in the water.
Nile crocodiles on the top of the food chain, but they are threatened:
Population and status of the species
According to the International Union of Nature Protection, Nile crocodiles belong to the category of “minimal concern” from the point of view of the threat of disappearance. The population has from 250,000 to 500,000 individuals, and they live all over the African continent.
Protection of crocodiles
Hail loss is the biggest danger that Nile crocodiles face. They lose the range due to deforestation, global warming reduced the size and scale of water-bell lands. There are also problems when people build dams, draga and irrigation systems.