CAD - Canadian Dollar. Our currency rankings show that the most popular Canada Dollar exchange rate is the USD to CAD rate. The currency code for Dollars is CAD, and the currency symbol is $.
1 Once they take hold, mold and mildew shed tiny spores -- and these spores trigger indoor allergy symptoms.  Pet Dander: If you have pet allergies, youâre not actually allergic to cat or dog hair. Instead, the allergic reaction is caused by a tiny protein in an animalâs saliva. Even homes without pets may contain dander. Thatâs because pet dander is sticky and light.
Dermatitis can be caused by dog shampoos or other fur treatments not formulated for a puppyâs sensitive skin. A young dog can be allergic to fleas and mosquito bites. The bite of a flea itself is not what causes the allergic reaction, but the saliva from the flea. Internal parasites often cause hair loss in puppies. Mites can cause a dog to have sarcoptic mange. Ringworm, a type of fungus, can cause hair to fall out in round patches. Hair loss from internal parasites can cause the surrounding skin to become very itchy or irritated.