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.
Griffon Griffon is a type of dog - a collection of breeds that were originally hunting dogs. There are three lines of the griffon type recognized by the Fédération Cynologique Internationale (FCI): the griffon vendéens, the wirehaired pointers, and the "smousje" (Belgian companion dogs or Dutch Smoushond). The griffon type is characterized by rough or wire-hair.