i say German Shepherd easily, I got one from a Mexican farmer for 150 bucks, no papers but he's all GSD, he's about a year old now and holy hell I never thought a dog could be so smart, I've had plenty of dogs and this is easily the smartest dog I've ever had, took him literally an hour to learn basic commands like sit stay shake etc, plus he's a badass and intimidating looking but yet hes one of the nicest dogs I've ever had...I would post a picture but have no idea how.....
