Bolognese dog light write-up.
Bolognese dog set of pics
Many breeds originate from a small number of animals, that leads to mating inside kinship. The effect is different hereditary (genetic) diseases which are common in some breeds, for instance, hip dysplasia (specifically in German shepherds), epilepsy, ataxia, oculoskeletal dysplasia, and others.
Source of your dog
The canines can be divided into crossbreeds and breeds with a new pedigree and a breed without a pedigree.
Non-doggie breeds (hybrids): they are the consequence of a good unintended mating (crossing) of different varieties of dogs or dogs whose source is unknown.