The Belgian Shepherd Dog (Malinois) is a breed of dog, sometimes classified as a variety of the Belgian Shepherd Dog rather than as a separate breed. The Malinois is recognized in the United States under the name Belgian Malinois. Its name is the French word for Mechlinian, which is in Dutch either 'Mechelse' (from Mechelen) or 'Mechelaar' (one from Mechelen).
The other varieties of Belgian Shepherd are distinguished by their coat & color: the Tervuren is the same color as the Malinois with long hair, the Laekenois is the same color, only it may lack the black mask & ears, and has wirehair, the Groenendael (registered as Belgian Sheepdog by the American Kennel Club) has long hair and is solid black. There are (occasionally and historically) solid black, black-and-tan (as in a Doberman or as in a German Shepherd Dog), or other colored short-haired Belgian Shepherds, but these are not technically Malinois.
If a dog represented as a Malinios is brindle (clear stripes of different colored hair) it is probably a Dutch Shepherd Dog or a mixed breed, although the possibility exists that it is a "throwback" to a common continental shepherd ancestor.
Male Malinois are about 24-26 in. (61-66 cm), while females are about 22-24 in. (56-61 cm) at the withers. Female Malinois are said to average 25-30 kg (55-65 lb), while males are heavier at 29-34 kg (65-75 lb). Malinois can range from stocky to slender, but are always squarely built.
In Belgium, Germany, the Netherlands and other European countries, as well as in the United States, the Malinois is bred primarily as a working dog for personal protection, detection, police work, search and rescue, and sport work (Belgian Ring, Schutzhund, French Ring, Mondio Ring). The United States Secret Service exclusively uses the breed.