Argus has been called "The All-seeing", because he had eyes in his whole body, or perhaps only one hundred eyes in his head that slept two at a time in turn while the rest remained on guard.
Some deeds of Argus: Argus was known for having killed a remarkable bull which ravaged Arcadia, and for having caught asleep and killed the monster Echidna, who used to carry off passers-by. Also when a Satyr wronged the Arcadians and robbed them of their cattle, Argus killed him.