What breeds of dog do not affect asthma?

No dog breed is 100% hypoallergenic, meaning that no breed is guaranteed not to affect asthma. However, some breeds are considered to be more hypoallergenic than others, meaning they produce less dander and saliva, which are the most common allergens in dogs. Some of the breeds that are often recommended for people with asthma include:

- Poodles (standard, miniature, and toy)

- Portuguese Water Dogs

- Lagotto Romagnolo

- Bichon Frise

- Havanese

- Maltese

- Shih Tzu

- Lhasa Apso

- Soft-Coated Wheaten Terrier

- Irish Water Spaniel

It's important to note that even hypoallergenic dogs can still cause allergic reactions in some people, and the best way to determine if a particular dog will affect your asthma is to spend time with the dog before bringing it home.