Every dog has a unique DNA profile or fingerprint which can be used to distinctively identify that particular dog.  Half of a dog’s DNA profile is inherited from his dam and the other half from his sire so the dog’s DNA profile can be used to verify that his registered parents are in fact his biological parents (provided DNA profiles are available from both parents).

The DNA profile can also be used to check the authenticity of a DNA sample being used to screen for the presence of disease-causing genes to be able to verify that the correct dog's DNA is being tested.