This was released as a bonus track on the special edition boxset of The Lion's Roar. The Söderberg sisters explained that it didn't end up on the main album because "it's a little different."
Johan Söderberg, who is not related to the two First Aid Kit sisters, directed the song's music video. It was filmed, "in the deep dark forest of Järvsö, Hälsingland." The Söderberg sisters explained: "It's about our destruction of the planet, but it's also about finding the animal within you. Because we know that underneath that polished, civilized exterior there is definitely a wild creature longing to howl or roar."
"(What's So Funny 'Bout) Peace, Love, and Understanding" was written by Nick Lowe in 1974. The original version with his group Brinsley Schwarz was kind of somber, but Elvis Costello made it a classic with his 1978 uptempo take.