We go to a dog park where a trainer goes to work with his GS and his Malinois - except that the Malinois looks a little more furry than yours, the shape and color of your dog very much resembles his. As an aside, he says his Malinois was very easy to train. (makes me embarrassed to even try to get my girls to "come" in his presence.:rolleyes:)
There is normally quite a difference between a Basenji 'bark' and that of other dogs even when they try to copy dogs that do bark.
I had a Basenji staying here who did in fact bark like other dogs and I suspected that he might have another breed somewhere in his pedigree.