The Bullenbeisser, also known as the German Bulldog, is an extinct breed of dog known for its strength and agility. The breed was closely related to the Bärenbeisser (some authorities believe that the two breeds were one and the same; the names mean 'Bull-biter' and 'Bear-biter', respectively, and it is possible they were names for whether it was used for bull-baiting or bear-baiting), and was an ancestor to the modern Boxer. It was, in all aspects, similar to the present Alano Español (Spanish Bulldog) and very similar 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.