Reparto (por orden de créditos)
Javier Burgos
Self
Bill Dyer
Self (activist)
Darius Fullmer
Self (Animal Defense League)
Jane Goodall
Ray Greek
Self (anesthesiologist)
Isis Johnson-Brown
Self (former USDA inspector)
Shannon Keith
Kevin Kjonaas
Rich Mclellan
Self (emergency medical physician)
Matt Rossell
Erica Sutherland
Self (Students for Animal Liberation)
Jerry Vlasak
