Crocodiles in Australia are different from those in Africa and South America. Their body length is generally about six or seven meters, the longest can reach 10 meter, and their weight is more than one thousand kilograms. They are the largest crocodiles in existence, and they are also behemoths among reptiles today, and they have always been called "the king of reptiles".

In the past, it was estimated that there were/kloc-0.000000 bay crocodiles in northern Australia alone. However, due to the over-killing by human beings in recent years, this giant crocodile has become rare. In particular, the crocodile, which is over 10 meter long, has not been found for many years.

Up to now, the largest hunting record in history is an alligator10.058m long caught off the Philippine coast in the 9th century.

However, even so, it is much smaller than the ancient crocodiles in geological period. We can see from the existing crocodile fossils that there once lived a "crocodile" on the earth, which was about15.24 meters long, more than one third longer than today's crocodile.