| # | Title | Length |
|---|
| 1 | The Wolf Is Loose (album version)- recording engineer:
- Matt Bayles
- assistant engineer:
- Ben Verellen
- producer:
- Matt Bayles and Mastodon
- assistant mixer:
- Pablo Arraya and Jim Keller
- mixer:
- Rich Costey
- bass:
- Troy Sanders
- drums (drum set):
- Brann Dailor
- guitar:
- Brent Hinds and Bill Kelliher
- background vocals:
- Brann Dailor and Bill Kelliher
- vocals:
- Brent Hinds and Troy Sanders
- drums (drum set) technician:
- Chris Common
- recorded at:
- Jupiter Studios in Seattle, Washington, United States, Red Room Recording in Seattle, Washington, United States and Studio Litho in Seattle, Washington, United States
- mixed at:
- Sony Music Studios in Hell's Kitchen, New York, New York, United States
- recording of:
- The Wolf Is Loose
- lyricist and composer:
- Mastodon
| 3:34 |
| 2 | Capillarian Crest (single version) | 4:22 |
| 3 | Crystal Skull (album version)- recording engineer:
- Matt Bayles
- assistant engineer:
- Ben Verellen
- producer:
- Matt Bayles and Mastodon
- assistant mixer:
- Pablo Arraya and Jim Keller
- mixer:
- Rich Costey
- bass:
- Troy Sanders
- drums (drum set):
- Brann Dailor
- guitar:
- Brent Hinds and Bill Kelliher
- additional guest vocals:
- Scott Kelly
- background vocals:
- Brann Dailor and Bill Kelliher
- vocals:
- Brent Hinds and Troy Sanders
- drums (drum set) technician:
- Chris Common
- recorded at:
- Jupiter Studios in Seattle, Washington, United States, Red Room Recording in Seattle, Washington, United States and Studio Litho in Seattle, Washington, United States
- mixed at:
- Sony Music Studios in Hell's Kitchen, New York, New York, United States
- recording of:
- Crystal Skull
- additional lyricist:
- Scott Kelly
- lyricist and composer:
- Mastodon
| 3:25 |
