"This is a picture I took of our Brottweiler. He is now a little over a year old and about 47lbs. He is done growing. He aims to please and is very well behaved. He has the chewing characteristics of a Rottweiler. People tell us he looks like an over-sized Brussels Griffon. He's a great dog!"
The Brottweiler is not a purebred dog. It is a cross between the Brussels Griffon and the Rottweiler. The best way to determine the temperament of a mixed breed is to look up all breeds in the cross and know you can get any combination of any of the characteristics found in either breed. Not all of these designer hybrid dogs being bred are 50% purebred to 50% purebred. It is very common for breeders to breed multi-generation crosses.