Nowadays pets, especially dogs, are very popular. One of the most common ways of describing dogs is "members of the family". It can be said that nowadays dogs have become an integral part of the household, becoming an important part of one's family and social circle. Not only children want a little friend, but adults also need the company of a pet. Nowadays, the recreational (leisure) purpose of keeping dogs is also increasingly being observed and is becoming more and more visible, as leisure time spent with a dog contributes to improving one's health and working ability. Walking can be one of the most important leisure activities with a dog and can help to provide the daily activity needs. A number of studies have focused on the positive effects of dog walking for physical activity. Research focuses on the positive effects of dog ownership on increasing an individual's physical activity. Active encouragement of dog walking can increase physical activity levels, thus contributing to improving people's health and quality of life [14, 15, 45, 59]. Studies suggest that dog ownership has a positive impact on physical activity [62, 63, 64]. More and more dog owners are now taking their dogs with them on both their travels and holidays. Physical activity, which includes exercise, is inversely related to mortality but also to reducing obesity rates, and thus has an important role in preventing disease, improving quality of life [18] and reducing healthcare expenditure. The aim of my research is to investigate the dog-human relationship and the role and importance of the recreational activity system in this context in society. A further aim of my research was to investigate the role and impact of dogs on dog owners' physical activity, dog interaction and mental health. To achieve my goal, I created an online questionnaire. In my research, I sought to answer questions about how dog owners develop a relationship with their companion animal, the role of the dog in their active leisure time and the impact of the dog on the owner's mental health.