Dander is a problem because they contain allergens that collect easily on furniture, sticks to clothes, and remain airborne for long periods of time. Salivia and urine also can contain allergens.
Most people think that having a hypoallergenic pet will eliminate allergic reactions. The truth is that they may shed less fur than other breeds, but no breed is truly hypoallergenic. Their fur can still collect pollen, dust, mold and other allergens.
Humans aren't the only ones to suffer from allergies. Dogs are quite frequently allergic to environmental and food allergens. However, instead of sniffling and sneezing, they itch.
If your dog frequently scratches and it's not flea related, licks his paws, or if he has red, irritated skin, your dog may be suffering from allergies. It can be difficult to distinguish between environmental or food allergens, but if the behavior is seasonal, you can bet your dog has the doggy form of "hay fever."
Your veterinarian can suggest different solutions, which can include changing his food and giving antihistamines, omega fatty acids, or even allergy shots.
Felines can have food and environmental allergies, too. Cats can become so itchy, especially around the face, that they hurt themselves from excessive scratching. Cats also can have an asthma-like condition, which can be is life-threatening when acute and is triggered by similar conditions like stress or smoke.