Are the Bullenbeisser and Mexican Hairless Dog both dogs?
Bullenbeisser The Bullenbeisser (also known as the German Bulldog) was a breed of dog known for its strength and agility. The breed was closely related to the Bärenbeisser (some believe that the two breeds were the same; the names mean "bull-biter" and "bear-biter," respectively), and the Boxer. It was, in all its aspects, similar to the present Alano Español (Spanish Bulldog) and very alike to the Dogo Argentino, not only in aspect, but also in usage. There were two regional varieties, the Brabanter Bullenbeisser and the Danziger Bullenbeisser. The breed is now extinct.
Belgian Blue The Belgian Blue (French: Blanc-Bleu Belge , Dutch: Belgisch Witblauw ) is a breed of beef cattle from Belgium. It may also be known as the Race de la Moyenne et Haute Belgique . Alternative names for this breed include Belgian Blue-White; Belgian White and Blue Pied; Belgian White Blue; Blue; and Blue Belgian. The Belgian Blue's extremely lean, hyper-sculpted, ultra-muscular physique is termed "double-muscling". The double-muscling phenotype is a heritable condition resulting in an increased number of muscle fibers (hyperplasia), instead of the (normal) enlargement of "individual" muscle fibers (hypertrophy).