A crocodile simply lazing around in your dream primarily means deceit, treachery, slyness and stealth. If you are attacked or chased by a crocodile in your dream, this points to the fact that there are people around you, in the real world, who do not have the best intentions and want to harm you in a stealthy way.
If you are chased by an alligator in your dream, then you feel threatened and fear not to be overcome by unseen danger. You should be very cautious about advises you receive during following days from friends or colleagues, as these may be bad advices which are going to bring about disappointment in love life or business.
The crocodile may also represent false emotions displayed by people you know or by you yourself, as the animal may symbolize the 'crocodile', distorted and deceiving tears.
If the crocodile dies in the dream this means that you are going to be very successful in all aspects of your life - love life, profession, financially etc.
Taking into account the fact that the crocodile is one of the first vertebrates which has a penis, the animal appearing in your dreams may also stand for sexual desires. But the aggression of the crocodile is famous, therefore the sexual desires are always associated with fear when this animal populates our dreams - in conclusion, those who dream crocodiles are afraid of what they may sexually fantasize and lust for.