Welcome to the forum. I LOVE Boerboel! My son and I owned one many years ago. He was such a character and I've many fond memories of him. Chico was tan but our previous trainer has two Brindle similar to yours!
Yafah truly is "YAFAH" (which means 'beautiful' in Hebrew). I love the brindle colour, and was looking for a 'Brindle' BB, when I fell in love with my baby Charlie who is red (shrug, the heart wants what the heart wants, lol). How old is Yafah by the way?