A recent study has some scientists questioning whether there really are breeds of dogs that are hypoallergenic.

For years, breeders have promoted the idea that some types of dogs produce less dander and shed less fur making them a better choice for children with allergies.

But researches at Henry Ford Hospital in Detroit have concluded otherwise.

"We found no scientific basis to the claim hypoallergenic dogs have less allergen," said Christine Cole Johnson, chair of Henry Ford's Department of Public Health Sciences and senior author of the study.

The findings are to be published online this month in the American Journal of Rhinology and Allergy. The study will be available at http://www.ingentaconnect.com/content/ocean/ajra.

The researchers suggest that early exposure to dogs is a better way to prevent allergies from becoming an issue.

—Melissa Kossler Dutton