The study published in Circulation: Cardiovascular Quality and Outcomes*, found evidence of an association of dog ownership with a better outcome after a major cardiovascular event.
Other studies have come to similar conclusions, and researchers believe dog ownership has both physical and mental health benefits.
* Mubanga M, Byberg L, Egenvall A, Ingelsson E & Fall T (2019) Dog Ownership and Survival After a Major Cardiovascular Event. A Register-Based Prospective Study. Circ Cardiovasc Qual Outcomes 12 (10), e005342 PubMed.