The dried clay has begun to flake off and fill the print. One would do well to blow that our before making a model for a 3D print. If one were using plaster they might embed the debris, depending on the purpose of doing it at all. What kind of dog was this? https://www.bing.com/images/search?q=dog%20print%20identify&qs=n&form=QBIR&sp=-1&pq=dog%20print%20identify&s
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