Ownership of a mixed-breed dog was associated with higher risk of CVD, HR 1.13 (95% CI, 1.09–1.17). You own a mutt, you're more likely to have heart disease... You own a pure bred hunting dog or retriever, you're likely to be healthier, wealthier, and wise enough to have a good doctor/healthcare. ----------- Dog owners were younger than non-owners at baseline (mean age, 52 vs. 58 years) Age seemed to modify the association between dog ownership and myocardial infarction, with lower HRs in older age groups