Gharials are social crocodilians and groups of adults congregate at suitable sites. They rarely venture far from the safety of the aquatic environment into which they can dive when alarmed. Males become territorial in the courtship/ mating season, and spar for territory in shallow water. Lying parallel to each other, males raise heads well out of the water, and attempt to push each other off balance with their snouts. Violent "snout bashing" and biting has been observed. Female Gavialis become territorial in the nesting season, and will also defend nests from predators.

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