This article is from the Malinois Breed FAQ, by firstname.lastname@example.org (Nancy Bennett).
Just about anything their master asks them to do! There is almost
nothing a Malinois won't try if encouraged by his master. These dogs
excel at obedience, tracking, agility, flyball, herding, showing,
Schutzhund and other protection sports, search and rescue, police
work, and just about anything else a dog can do. There are even
Malinois who lure course! These dogs are described by professional
trainers as having high "play drive" which means that everything is a
game to them, and they love games!