Yes, they are.
Most dogs shed a lot of hair and in doing so, they will also release a lot of allergens from the skin bacteria called cathepsin in their saliva. This type of allergen is called, Canis Familiaris dominate 1 or CD1 for short. The retriever doesn’t secrete much from these glands when compared to other breeds making them less likely to trigger an asthma attack due to asthma being caused by overreactions by the immune system’s CD4 helper cells when they see foreign substances like animal dander or dust mite fragments on their surface…