Ninos is a mix of Yorkie mom and Havanese dad. She had puppies with a Yorkie and they are black with white chests. The puppies are considered F1b hybrid puppies.
The Havashire is not a purebred dog. It is a cross between the Havanese and the Yorkie. 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.