Tiffany can classify this canine species as a blend or as an experiment.
There are several dog breeds, but not all are natural. Some species result from crosses between breeds that aim to create animals with peculiar characteristics. This is more common than you might think. When done under scientific studies, they stand in new races. Examples of these species are Pitubull or Pinscher dogs.
Otherwise, when this happens by chance, without any technical support, dogs are born without a breed, or mutts.
The case narrated will depend on how this crossing was made.