Dante's Inferno: Cerberus

When Cerberus perceived us, the great worm! His mouths he opened, and displayed his tusks; Not a limb had he that was motionless. And my Conductor, with his spans extended, Took of the earth, and with his fists well filled, He threw it into those rapacious gullets. Such as that dog is, who by barking craves, And quiet grows soon as his food he gnaws, For to devour it he but thinks and struggles,