Brothers of Dinosaurs are still alive even dinosaurs were destroyed.

There are many species of crocodiles, and they are ancient wilds. Science assumes that crocodiles were living 200 million years ago. Dinosaurs came to this world 60 million years later after first crocodile. But crocodiles are still alive even dinosaurs realm had perished. The biggest crocodiles among the species are the saltwater or estuarine crocodiles. It is found in suitable habitats in Northern Australia, the eastern coast of India and parts of Southeast Asia.

Fishes, birds, and even big hoofed animals are their meals. They are strong because their body consists of one third of tail, one third of body, and one third of big jaw. Strong jaw cannot bite neck of elephant but all. Big mouth is full of sharp teeth that are about 5cm/2inch. About 64 to 68 teeth are there. That is why animal cannot escape once crocodile bite it. 

Saltwater crocodile waits his meal get near to shore while his eyes are blinking over water. When hoofed animals come to lake and start drinking, with a help of his giant tail, he jumps like a rabbit and bites one’s neck. Then he quickly pulls his meal into water, and starts rolling his body. He only stops it when bitten animal dies by lack of breath. Crocodiles can reach speeds of 10 or 11 km/h (around 7 mph) when they "belly run", and often faster if they're slipping down muddy riverbanks. Crocodiles have smooth skin on their belly and side, while their dorsal surface is armored with large osteoderms.

Female crocodile lays eggs. Eggs are covered by rotten grasses, or they are put under sand. Mama crocodile never gets away from its eggs. When siblings come out of eggs, they start yelling to their mama. Mama transports them one by one with her mouth to shallow water. Then she lets them hold any grasses or branches of plants. Little crocodiles grow up there until they could swim. 

During hot days, crocodile keeps his mouth open while he is lying on sand. Then crocodile bird flies into his mouth so as to feed on bits of decaying meat that are lodged between the crocodiles' teeth. Real name of crocodile bird is Egyptian plover. Crocodile does not have toothbrush and toothpaste. Plover doesn’t have any other easy found foods than crocodile gives. The crocodiles do not eat the plovers, as the plovers are providing the crocodiles with greatly-needed dentistry. This relationship has never been broken over hundreds years. Crocodile lives about hundred years. It is enough time to feed about six to seven generations of plover.