ANIMAL WORLD
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Crocodylia
Family: Crocodylidae
Genus: Crocodylus
Species: C. porosus
Saltwater crocodile- crocodylus porosus
General description: is the largest of all living reptiles, as well as the largest terrestrial and riparian predator in the world. The males of this species can reach sizes of up to 6.7 m (22 ft)[2] and weigh as much as 2,000 kg (4,400 lb).[3] However, an adult male saltwater crocodile is generally between 4.3 and 5.2 m (14 and 17 ft) in length and weighs 400–1,000 kg (880–2,200 lb).
Evolution: In this crocodile the evolution is almost nothing, it hasnt change much. Crocodiles are considered living fossils.
Extinction: The animal is is in the lower level of extinction from the lower risk, this means that for now the population of crocodylus porosus is fine. The minimum risk is because some people kill them for their intimidating aspect.
Biogeography: In this moment is found in India, Bangladesh, Malaysia, Sri Lanka, Indonesia and Australia. It is believed that it is a direct link to similar crocodilians that inhabited the shorelines of the supercontinent Gondwana, to Isisdorfia only that crocodylus porosus is bigger in size. Scientists believe that crocodylus porosus is an ancient species that could have diverged anywhere from 39 and 9 million years ago.
Animal behavior: They have a much elaborated social structure; they communicate using sounds, smells and different body postures. They live in hierarchy, during the dry season this hierarchy lowers much, and sometimes when the number of individuals in the group is really low they abolish the hierarchy so that the group doesn’t disappears. In the birth season males and females turn really aggressive to protect their child, also they turn very territorial. This season is from the last days of August. They are ambush carnivore predators.
Isolation mechanisms: Behavioral isolation, this isolation is used to keep away crocodrylus palustris, because when they meet both species can be in their mating season but they prefer the members of their own species.
