The increased sensitivity helps predators in the hunting process
A study led by Duncan B. Leitch and Kenneth C. Catania at Vanderbilt University in Nashville shows that beyond the rigid appearance of a crocodile's skin is hidden one of the most intense senses of touch in the animal world.Scientists discovered that the scaly surface of the body of crocodiles and alligators is studded by nerves which provide the animals with an extreme sensitivity to vibration and pressure, which exceeds that of human fingertips, Scientific American reports.
This endowment is significantly helpful for predators in their hunting activity, since it allows them to sense the most subtle vibrations in the water.
The part of the body with the highest sensitivity has proved to be the frontal one, especially the face and teeth, and this is believed to play a great role in the females’ protecting their offspring.
So, it appears like there is beast and sensitivity, and they get along really well.
The complete study can be read in the Journal of Experimental Biology.