Welfare charity Dog Trust Foundation was featured in a front-page article in The New York Times titled "New Study Links Long Kisses to Longevity" by Emily Anthes A study conducted in the UK and compiled by its author and data manager Kirsten McMillan. There are 584,734 dogs in the database, which was compiled with help from breed registries, insurance companies, veterinary firms and others.

It is a purebred dog, but at the same time the numerical records of these different dog breeds may be prone to some deviations and do not fully represent the general dog population in the UK. In addition to breed, factors such as genetics, environment and diet must also be considered. They reported that flat-faced (brachycephalic) breeds lived 11.2 years, while long-faced breeds lived 12.1 to 12.8 years. The study also found that the average lifespan of purebred dogs was 12.7 years, while the average lifespan of crossbred dogs was 12 years.

This is certainly contrary to the There is a common belief that crossbred dogs are healthier than purebred dogs. The article quoted Dr. Audrey Ruppel, a veterinarian at Virginia Tech who was not involved in the study, as saying: "I think it's a more complicated issue than that. Some purebred dogs are generally very healthy."