All tagged wolves without teeth

What does "Wolves without Teeth" by Of Monsters and Men mean?

"Wolves without Teeth" is the fourth track from Of Monsters and Men's Beneath the Skin, and I think it's one of my favorites. The music is engaging, the lyrics are interesting, and the give-and-take duet between Nanna Bryndís Hilmarsdóttir and Ragnar "Raggi" þórhallsson tells a beautiful story. The song is almost narrative in form and tells an intense but ultimately hopeful tale of fear and love.