Smithfield Foods gestation crates, Smithfield Foods/Murphy Brown pig breeding facility, Waverly, Virginia, United States <a rel="nofollow" class="external autonumber" href="http://www.humanesociety.org/assets/pdfs/farm/smithfield_2010.pdf">[1]</a>
Humane Society of the United States
CC BY 3.0
Humane Society of the United States, either stills, or screenshots taken from <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=L_vqIGTKuQE">this video</a>