So, your veterinarian tells you during a wellness exam that your dog has a heart murmur. Your pal acts fine, eating and drinking, not coughing and full of ...

The result is a change in the dog’s bark and noisy breath sounds that eventually deteriorate into difficult breathing. Exercise, excitement, stress and warm temperatures make it worse.

In a new study, researchers examined the gene-environment (GxE) interactions between pet ownership in infancy and the 17q12-21 (asthma-risk) locus concerning wheezing.