Songfacts®:

• The American release of Ellie Goulding's debut album, Lights, features a couple of songs that weren't on the original UK release of the set: this track and "Human." They replaced "I'll Hold My Breath" and "Wish I'd Stayed," which were omitted from the repacked US version. Goulding told Chart Rigger: "It was kind of tough, but it was my decision. I feel like I've grown out of them slightly because I wrote them so long ago. 'Wish I'd Stayed' will always be very special to me because that was one of the very first songs I wrote, when I was just really free-writing. I just prefer 'Animal' and 'Human.' They're an example of how I've progressed. And the reason I kept them for the repackage and not the [next] album is because I think I'm going to progress even more."
• Goulding told Seventeen magazine, this is probably her favorite track from the album as, "It has such a good feeling about it. It's the one that I enjoy the most live as well. It's just about having an obsession with someone."