The Tervuren has a thick, double coat similar to the Groenendael. In 1412, as part of the Groenendael congregation, the abbey joined the Windesheim congregation. The Groenendael has a thick, double coat. The church was designed by Hubert van Groenendael in neo-Romanesque style on a cruciform plan. The Groenendael is recognized by its distinctive black coat. The Groenendael needs a large amount of exercise as a rule. The Groenendael is intelligent, active, loyal and quietly affectionate. Groenendael exhibiting basic herding instincts can be trained to compete in herding trials. The Groenendael should be at the withers for males, and for females. The Groenendael should be athletic, strong, imposing, rustic, and balanced in appearance. The Groenendael bonds deeply to its people and cannot live outdoors or in a kennel.