SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Pork production. A pig walking between two rows of birthing cages at an intensive farm. Here the sows are held once they have given birth. They can roll onto their sides to feed the piglets but not to crush them. Photographed at the Pradvinskoye Svinoproizvodstvo complex near Kaliningrad, Russia.
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