Simple SummaryThis study examines the relationship between human–dog attachment, empathy, and human quality of life. The findings suggest that attachment to dogs and concerns for empathy have a significant double-mediation effect on human quality of life. However, cognitive empathy does not show a significant effect. The study highlights the importance of attachment and empathy towards dogs in enhancing the quality of life of both humans and dogs and suggests a shift in perceiving dogs as independent individuals. Future research should focus on affective empathy to improve relationships and the quality of life of both humans and dogs.AbstractThis study investigates the impact of empathy on the relationship between human–dog attachment and human quality of life. A survey involving 263 dog owners was conducted to gather data on attachment to dogs, empathy, and human quality of life in Korea. The findings indicate significant correlations between attachment to dogs, human empathy, and quality of life. Specifically, both general attachment and concerns for animal rights/welfare demonstrate meaningful parallel double-mediation effects. However, cognitive empathy does not show a significant double-mediation effect on human quality of life. These findings emphasize the importance of attachment and empathy towards dogs in enhancing the quality of life of both humans and dogs. The study suggests a shift in perceiving dogs as independent individuals rather than mere substitutes for humans. Future research should focus on emotional factors, particularly affective empathy, to further enhance the quality of life for both humans and dogs through improved relationships.