Crocodiles have the strongest bite in the animal kingdom. Its bite can exert a force eight times more powerful than that of a great white shark and 15 times more than a Rottweiler’s. Powerful muscles for closing the jaws, however, contrast with small, weak ones for opening them.
Nile crocodiles are carnivores (they eat only meat). They mainly eat fish, but will also go for small hippos, zebras and birds if they get the chance. They will also eat carrion (the meat from animals that they haven’t killed themselves). Nile crocodiles will also attack and eat humans. Each ...
Large crocodiles swallow stones, known as gastroliths. These act as ballast, helping them to balance their body underwater.
Crocodiles are the most vocal of reptiles. Among more than five different calls are the deep, vibrating bellow of courting males and the ‘peeping’ of babies inside the egg. This 'peeping' encourages the female to excavate the nest.
Female crocodiles exhibit impressive maternal care. They use their massive jaws to transport newly hatched young to a ‘nursery pool’ where they guard them from predators. The sex of crocodile hatchlings is determined by the temperature at which the eggs incubate. At 30ºC or less they will be most...
Nile crocodiles hatch from eggs. Female Nile crocodiles lay as many as 60 eggs and then cover them with sand to protect them until they hatch, which is after about 90 days.
It is believed that when crocodiles are lying in the sun with their mouths wide open they are regulating their body temperature by using the moist surface inside their mouths in the manner of a radiator (thereby losing heat). They may also use the mouth to absorb heat from the sun in cooler weathe...
Nile crocodile (Crocodylus niloticus) are ecologically important as predators.
They help the environment by keeping barbel catfish, which are predators themselves, in check. Barbels eat other fishes which are the diet of more than 40 species of birds.
If birds leave an area because there are no edible fish, the amount of bird droppings, which provides nutrients for the fish, declines, and the food chain is disrupted. Unfortunately, the Nile crocodiles' population suffers from pollution, hunting, and entanglement in gill nets.
The Nile crocodile nearly became extinct in the middle of the twentieth century, but they are now a protected species and the population has risen.