A Dog’s Best Friend. The Special Bond Between Canines and Their Humans


The unique bond between dogs and humans is based on companionship, joy, and unconditional love. Dogs have been domesticated for over 10,000 years and coevolved alongside humans to become our close canine companions (Dog Intelligence Study, 2015). The special relationship we share with our dogs stems from them filling the role of loyal friend, helper, protector and family member. Studies have shown that the human-dog relationship boosts psychological and physical wellbeing for both species.

History of Dog Domestication

Scientific evidence shows that dogs were likely domesticated from gray wolves sometime between 20,000 and 40,000 years ago. The oldest canine skeletal remains found so far have been dated around 36,000 years ago. These early dogs would have resembled gray wolves but were more tolerant and willing to be around humans.

However, the definitive timeline for dog domestication was long debated amongst researchers. In recent years, genetic analysis and archeological discoveries have shed more light on the process. Analysis of genetic mutations in modern dogs and wolves indicates domestication likely occurred between 20,000 to 40,000 years ago. Furthermore, the remains of a dog buried beside humans discovered in Germany and dated to 14,200 years ago provides the earliest undisputed evidence of a domesticated canine.

Overall, the bulk of evidence points to dogs first being domesticated from wolves more than 10,000 years ago. This process occurred gradually over thousands of years as certain wolf populations became increasingly accustomed to living near human camps and scavenging food scraps.

Dogs Provide Companionship

Dogs can provide companionship and help reduce feelings of loneliness and isolation for their owners. Studies have shown that owning a dog is linked to less perceived social isolation and improved ability to form relationships (1). For people living alone, owning a dog has been associated with less depression compared to non-dog owners (2). The social support a dog provides can make their owner feel less lonely. Dogs give their owners a sense of purpose and belonging. Simply petting a dog can release oxytocin, dopamine and serotonin, which can lift mood and reduce feelings of sadness. For many, a dog provides a non-judgemental companion to confide in. The unconditional love from a dog can help combat loneliness and give their human emotional fulfilment.

dogs providing companionship and reducing loneliness

Dogs Motivate Exercise

One of the primary benefits of dog ownership is that dogs require regular exercise and activity. Unlike cats, dogs need to be walked and taken outside multiple times per day. According to a study published in BMC Public Health, dog owners walk an average of 22 minutes more per day compared to non-dog owners (NPR).

Dogs encourage their owners to take them on walks, hikes, runs, and to the dog park for playtime. This motivation to exercise leads to real health benefits. Research has shown that dog owners have lower blood pressure levels and cholesterol compared to non-owners. Dogs also help their owners meet the minimum recommendations for daily physical activity.

Simply having a dog encourages more movement throughout the day. Taking dogs out for bathroom breaks, playing fetch, and going up and down stairs or on walks significantly increases daily movement for both the owner and the dog.

Dogs Provide Emotional Support

One of the most significant benefits of the dog-owner relationship is the emotional support dogs provide. Studies show that emotional support dogs can help people cope with anxiety, depression, and PTSD. For example, research by Brooks (2018) found that by providing unconditional positive regard, pets promote emotional stability through the regulation of feelings and stress management[1].

dogs giving emotional support for anxiety and mental health

Specifically, dogs offer non-judgmental support and affection that can have profound effects on mental health. The calming presence of a dog can lower anxiety and help people relax. For those suffering from depression, taking care of a dog provides purpose and motivation to get up in the morning. The companionship of a loyal dog can also ease feelings of loneliness and isolation.

For military veterans and others with PTSD, emotional support dogs can provide a sense of security and calm traumatic flashbacks or anxiety attacks. The dogs are trained to recognize and respond to signs of distress, which can rapidly alleviate symptoms. With their intuitive ability to comfort, dogs give steady emotional support to help cope with PTSD.

Overall, the unique emotional bond between dogs and their owners leads to powerful mental health benefits. The unconditional love and constant companionship dogs provide promotes emotional stability and wellbeing.

Dogs Can Detect Health Issues

One of the most amazing abilities of dogs is their incredible sense of smell. Dogs have up to 300 million olfactory receptors in their noses, compared to only about 6 million in humans (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8388720/). This allows them to detect odors at concentrations nearly 100 million times lower than humans can. Thanks to their powerful noses, dogs can sniff out certain health conditions in their human companions.

Studies have shown that some dogs can detect cancer in humans by smelling subtle volatile organic compounds released by cancer cells (https://vcahospitals.com/know-your-pet/how-dogs-use-smell-to-perceive-the-world). There are numerous stories of pet dogs persistently sniffing or licking moles on their owners that later turned out to be malignant melanoma. Dogs have also been trained to detect lung and breast cancer through breath and tissue samples.

In addition to cancer, some dogs have been known to detect low blood sugar in diabetics and impending seizures in people with epilepsy. The changes in the human body’s chemistry that occur with these conditions are likely detectable by dogs before physical symptoms appear. While not conclusively proven, these abilities show the possibility of using dogs’ advanced sense of smell for medical purposes.

Dogs Help Social Interactions

dogs helping facilitate social interactions

One of the main ways dogs benefit their owner’s social lives is by facilitating conversations and helping people meet new friends. According to research from Harvard Health Publishing, dog owners are more likely to get to know their neighbors and engage in small talk, like discussing dog breeds and exchanging training tips. This can lead to more meaningful social connections and friendships. Studies show that dog owners have increased social well-being and report feeling less isolated or lonely. The AKC also notes that taking a dog on regular walks creates opportunities to interact with strangers, neighbors, and other pet owners. These brief encounters can brighten someone’s day and make them feel more connected to their community.

Dogs Teach Responsibility

Having a canine companion can teach children important life skills, especially responsibility. Caring for a dog requires dedication, structure, and diligence every single day. From regular feedings to exercise, grooming, training, and cleaning up after them, looking after a dog’s needs builds accountability at an early age.

Children learn to put their pet’s wellbeing first, before playtime or other activities. Walking, feeding, and playing with a dog, even when they don’t feel like it, instills discipline and commitment. Understanding that a living creature depends on them helps children develop empathy, compassion, and selflessness as well.

Dogs thrive on routines and schedules, so caring for them reinforces organizational habits in children. Setting reminders to carry out daily tasks like medications or bathroom breaks fosters conscientiousness. Kids also gain experience budgeting for food, supplies, veterinary care, and other essentials to properly care for their furry friend.

As children practice being responsible pet owners, they gain confidence and a sense of purpose. The unconditional love from their loyal companion further motivates kids to live up to their duties.

Dogs Provide Unconditional Love

One of the main reasons humans form such a strong bond with dogs is due to their ability to provide unconditional love and affection (https://en.wikipedia.org/wiki/Human%E2%80%93canine_bond). Dogs are known to be loyal companions that deeply bond with their owners and family members. They eagerly greet their owners when they return home and their entire body language conveys affection and excitement. Dogs provide constant companionship and their mere presence can have a calming effect that relieves stress and anxiety. Unlike some human relationships, a dog’s love is not conditional on receiving something in return. They exhibit undying devotion and their affection does not waver due to moods, opinions, or circumstances. This unique ability for dogs to love unconditionally and wholeheartedly is a large part of why the human-canine bond runs so deep.

dogs providing unconditional love and affection


The relationship between dogs and humans is truly unique and special. There is a reason why dogs are called “man’s best friend”. Dogs provide companionship, emotional support, security, and unconditional love to their owners. They bring joy and fun into our lives while also motivating us to stay active and get exercise. Dogs help us connect with others and teach us responsibility from a young age. There is no bond quite as strong as the one between a person and their beloved canine companion. Dogs devote themselves fully to their owners and brighten each day. For all they give us, dogs ask little in return – only our love.

In summary, dogs are truly man’s best friend.

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