Why Having a Dog is Good for Your Health According to Igor Purlantov Although the phrase a “Man’s Best Friend” only dates back to the 19th century, dogs have long played a key role in the lives of humans says animal rights advocate Igor Purlantov. It is believed that modern day dogs were domesticated from gray wolves around 15,000 years ago. Since that time, dogs have become best friends with both men and women and have gained increasingly popularity throughout the years according to Igor Purlantov. Adding to the increased popularity of dogs is the fact that many people enjoy their companionship. Along with providing companionship, there are numerous health benefits of having a dog in your household says Igor Purlantov. in Public bookmarkswith aalzheimer’sanimalattackbenefitscompanionshipdogdogsforhavinghealthheartigorofpatientspetpurlantovshelter