Explanation of anatomical directions on a pig: dorsal, ventral, anterior, posterior.
Dorsal: Refers to the back side of an organism. Example: The pig's back in the image.
Ventral: Refers to the belly side of an organism. Example: The pig's belly in the image.
Anterior: Refers to the head end of an organism. Example: The pig's head in the image.
Posterior: Refers to the tail end of an organism. Example: The pig's tail in the image.
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