"Dogs come in all shapes and sizes, and Pig the Akita mix definitely proves it. How is she unusual looking, you ask? Pig has Short Spine Syndrome which is exactly what it sounds like: she is missing several vertebrae, so her body is much shorter than it is supposed to be."
https://blogs.discovery.com/bites-animal-planet/2014/07/pig-the-unusual-looking-pup-is-anything-but-ordinary.html?utm_source=facebook.com&utm_medium=social&utm_campaign=AnimalPlanet&AID=11732244&PID=6156307&SID=47e7kqorx1lt&URL=http%3A%2F%2Fblogs.discovery.com%2Fbites-animal-planet%2F2014%2F07%2Fpig-the-unusual-looking-pup-is-anything-but-ordinary.html%3Futm_source%3Dfacebook.com%26utm_medium%3Dsocial%26utm_campaign%3DAnimalPlanet&ecid=AFF-7975437&pa=affcj&PCID=2470763
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