The Bouvier des Flandres is a very trainable dog, as long as you take the time to build a bond with them and be kind, fair and consistent. They have worked as cattle and sheep herders, pulled carts, guided the blind and assisted police, so its fair to say they are a versatile and intelligent breed.
This is a dog who will enjoy some form of training most days, as an activity in its own right rather than just a means to an end, and they won’t appreciate being left alone or separated from their family for long. Easily capable of a variety of dog sports; though possibly a little large and heavy to really excel in some, the Bouvier could be a fun companion for someone who wants to have a go at a selection of canine activities. Work hard on early socialisation to other animals and children, and install a solid recall as the Bouvier may take some persuasion to return and stop herding up stray people!