The Kerberos shows an extraordinary strength in rending his enemies.
Plato in the Republic refers to the composite nature of Kerberos.
In this article he seems to try to establish a certain similarity between his conception of the Kerberos myth and my own.
So Kerberos would allow her to pass; but still another danger would await her.
First Hesiod and next Stesichorus discover his name to be Kerberos.