What makes the crocodile at times become very aggressive?

An aggressive crocodile with mouth open.

Closely observing the behavior of these frightening reptiles as they grow up under cultivation on crocodile farms has helped dispel some long-standing myths.

For years it was thought that a crocodile patiently stalks its prey for days, or even weeks, before striking unexpectedly with lightning speed.

Current observation has revealed, however, that crocodiles are simply aggressive territorially during their mating season, the monsoon.

If prey enters its territory during this time, the crocodile might aggressively go after it, whereas at another time of the year, the crocodile might just watch the same animal disinterestedly at a distance.

Not All Cruelty and Violence

The same jaws that can inflict serious injury are also capable of a deft touch.

If unborn crocodiles are sluggish breaking out of their shells, the mother crocodile will roll her eggs ever so gently, stirring the hatchlings to action.

Crocodile teeth are designed to grip rather than to slice.

If small enough, the prey is swallowed whole. 

Otherwise, it is ripped apart and consumed piece by piece. 

Autopsies on dead reptiles have revealed stones in their stomachs. 

Whether eaten deliberately or not, these stones are believed to act as ballast.

Visitors often observe crocodiles on riverbanks with their huge jaws agape. 

Most would probably assume this posturing signals aggression. 

On the contrary, the open-jaw position allows it to adjust to outside temperature. 

Like all reptiles, crocodiles are constantly adjusting their body temperature.