Dogs versus cats is perhaps the most passionately argued lifestyle debate in human history. Dog owners point to loyalty, unconditional love, the health benefits of daily walks, and the deep emotional bond that has made dogs man's best friend for 15,000 years. Cat owners point to independence, lower maintenance, the meditative calm of a purring cat, and the fact that cats are perfectly adapted to modern urban apartment living. Studies show that dog owners are more extroverted and cat owners more introverted. Both pets have been shown to reduce stress, lower blood pressure, and improve mental health. But when people are forced to choose just one — which animal wins?