Actually, very common! Pugs are among a few breeds who are predisposed to having insane epileptic attacks. This syndrome has a name: PDE or Pug Dog Encephalitis. It is specific to the Pug breed and is caused by the inflammation of the brain tissue where healthy cells mistakenly get attacked by a Pug’s immune system. The exact reason for PDE is still not 100% known. Most likely (and many animal geneticists unanimously agree this is a true cause) the genetic hereditary abnormalities have something to do with it.