The engineers used a CT scan of Loca's skull to design a custom-fit mask, which was then printed with a 3D printer. Loca was the first patient to try the Exo-K9 mask, the university said.

Thanks to delicate surgery and a 3D print face mask, Loca, a 4-month-old female Staffordshire bull terrier, is recovering from a severe attack from another dog.

Thanks to delicate surgery and a 3-D print face mask, Loca, a 4-month-old female Staffordshire bull terrier, is recovering from a severe attack from another dog.