They have different bloodlines
It’s common knowledge that every dog breed has a background of different bloodlines. This means that they’re a mixture of different traits from different countries that have been mated for different purposes. Black Belgian Malinois have a bloodline of generations that were bred to fit work criteria in order to increase efficiency and productivity. This creates a difference in terms of physical appearance and temperament in dogs, which is why it’s important to educate yourself before you pick and choose the right fit for you.