User blog comment:The Reptile King/The Reptile Kingdom/@comment-38.128.142.31-20160522015615/@comment-27950421-20160524023149

An animal is considered to be the biggest based on weight this is why the salt water crocodile is the worlds largest living reptile not tje reticulated python. A green anaconda isn't heavy enough to be megafauna and it is the heaviest snake on the planet. As for the Megalania, the amount of land in a species's range has nothing to do with whether or not it's an Apex predator. And if you want to get into that, then I would like to point out that due to the difference in the sizes of Africa and Australia, the Nile Crocodile ends up controling more territory even if it doesn't rule the entire continent. The Salt Water Crocodile does as well due to its ability to traverse the ocean.