Belgian Shepherd (Tervuren). Known for their versatility, loyalty and trainability, this breed is highly intelligent and alert. Needs careful socialization to prevent them from becoming nervous and potentially aggressive. They are natural protectors. Due to their high maintenance nature, they are not recommended for first time dog owners.
Belgian Malinois, apparently the gene that causes the black mask (common to Pugs, Mastiffs, Danes, GSDs and Belgian Shepherds) has a quirk that extends the dark/sooty markings to all the extremities (vaguely similar to Siamese cats)