"This is Oreo! We adopted him from our local humane society. We just had his DNA tested, and it came as 50% German Wirehaired Pointer and 50% Newfoundland. He is 16 months old in these pictures."
The German Wirehaired Newfie is not a purebred dog. It is a cross between the German Wirehaired Pointer and the Newfoundland. 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.