Pete once said that the foxes were a reference to females and the hounds were males.

Young volcanoes are like the younger people, they are unpredictable (Don't know when they are going to 'erupt')

"When Rome's in ruins, we are the lions, free of the coliseums."
In Rome, the people watch lions and man fight just for entertainment, so when Rome fell, the lions were free.

And the title is "Young Volcanoes", and the Roman city Pompeii was ruined by a volcanic eruption.