Hello! I have a 1 year old black shorthair cat. We assume she's just a normal shorthair but she has a very. Muscular. Build. Her tail is very thick compared to our other cats and her face is rather angular.
She is what you call a domestic short hair and we will never really know what all went into her, but the angular face and ears suggest possible oriental or Siamese ancestry, which could be as recent as a grandparent or 50 generations back. She's very beautiful.