As a lover of pigs and sheep, the sheep pig in this video was a delight —some of the sweetest taffy— for 4kergirl whose Limited Fork Theory is driven by interaction and is itself a form of interaction.  I collect evidence of interaction in configurations of shadows and reflections (some 40,000 images on three external hard drives).

Does 4kergirl want a shig?  Or one of those micro pigs the size of most of the plush pigs she collects at home and in her car?  

Sheep pigs (shigs) seem to offer visual evidence of interaction, some odd, maybe even deviant crossbreeding (genetic remixing) in a  lab component of an institution for the advancement of evolution and cloning; perhaps had Babe  been of this breed, the orphan pig would have had an easier time gaining acceptance as a sheep pig —and micro pigs certainly present evidence of interaction (they're so taffy!), so any serious practitioner of Limited Fork Theory: the study of interacting systems would have to have them, for the purposes of research, of course.