Czechoslovak Wolfdog

Dog

The Czechoslovakian Wolfdog (or Vlcak - Vlciak) is a relatively new breed of dog that traces its original lineage to an experiment conducted in 1955 in Czechoslovakia. After initially breeding 48 working line German Shepherds with 4 Carpathian wolves, a plan was worked out to create a breed that would have the temperament, pack mentality, and trainability of the German Shepherd and the strength, physical build, and stamina of the Carpathian wolf.

http://en.wikipedia.org/wiki/Czechoslovak_Wolfdog