7 Surprising Health Benefits of Having a Pet: What Science Really Says

By Sarah Denver

Human-Animal Interaction & Behavioral Specialist

The health benefits of having a pet extend far beyond companionship. Whether it’s a dog enthusiastically greeting you at the door or a cat quietly settling beside you after a stressful day, sharing your life with an animal can influence how you move, connect with others, and experience everyday life.

But what does science actually say about these relationships?

Can living with a dog or cat help you manage stress? Does caring for an animal encourage healthier routines? And are the potential benefits different depending on which species shares your home?

Researchers have been exploring these questions for decades, and recent studies are helping reveal a more detailed picture.

Imagine returning home after a particularly demanding afternoon.

Your inbox is overflowing, tomorrow’s responsibilities are already on your mind, and the day seems to have left you with very little energy.

Then your dog rushes toward you, delighted that you’re finally home.

Or perhaps your cat stretches, walks across the room, and settles comfortably beside you.

The deadlines haven’t disappeared. Your responsibilities haven’t changed.

Yet your attention shifts.

For a few moments, you are no longer entirely focused on everything that needs to be done.

This familiar experience raises an intriguing scientific question: Can ordinary interactions with animals contribute to better physical and emotional well-being?

According to the National Institutes of Health’s overview of human-animal interactions, researchers are investigating how relationships with animals may influence stress, physical activity, social connection, and other aspects of health.

However, the findings also reveal an important distinction.

Simply owning a pet does not guarantee improved health.

The potential benefits often depend on the quality of the relationship, individual circumstances, and the daily habits that develop through caring for another living being.

Let’s explore seven ways this connection may influence everyday wellness.

1. Dogs and Cats May Help Reduce Stress and Encourage Relaxation

Stress is a natural biological response.

When we encounter challenging situations, the body activates systems that help us respond, concentrate, and adapt.

Problems can arise when stressful experiences become persistent and opportunities for recovery are limited.

Work deadlines, financial worries, family responsibilities, and constant digital interruptions can all contribute to ongoing tension.

Understanding Cortisol and the Stress Response

One important part of the body’s stress-response system is the hypothalamic-pituitary-adrenal axis, commonly known as the HPA axis.

This system helps regulate the release of cortisol.

Although cortisol is frequently described as the stress hormone, it serves several essential functions.

These include:

• Regulating metabolism and energy availability.
• Supporting normal immune activity.
• Helping maintain blood pressure.
• Coordinating responses to physical and psychological challenges.
• Participating in daily physiological rhythms.

Cortisol itself is not harmful.

However, prolonged stress can interfere with normal physiological regulation and contribute to difficulties involving sleep, mood, and overall health.

What Researchers Have Found About Animal Interaction

A randomized controlled trial published in AERA Open investigated whether brief interactions with dogs and cats affected stress-related physiology among college students.

Participants who spent approximately 10 minutes directly interacting with the animals showed lower salivary cortisol levels than participants assigned to comparison conditions.

The study, Animal Visitation Program Reduces Cortisol Levels of University Students, provides evidence that short, positive interactions with animals can influence a biological marker associated with stress.

However, the findings do not establish that owning a pet permanently lowers cortisol or prevents stress-related illnesses.

They demonstrate an immediate effect in a specific research setting.

Why Spending Time With a Cat Can Feel Comforting

Cats may offer companionship through subtle, familiar behaviors.

Some enjoy being gently stroked.

Others prefer resting nearby, following their owners between rooms, or participating in quiet play.

For someone who spends long hours working or studying, a familiar cat’s presence may provide a pleasant opportunity to pause.

The experience does not require constant physical affection.

A cat sitting comfortably beside you may be just as meaningful as one actively seeking attention.

How Dogs May Support Relaxation

Dogs can provide similar opportunities through affectionate interaction, play, and shared routines.

Some owners find that sitting quietly with their dog helps them step away from stressful thoughts.

Others enjoy the emotional transition that comes with an evening walk.

The important factor is that the interaction remains positive for both the person and the animal.

The takeaway: Spending peaceful, screen-free time with a familiar dog or cat may offer an opportunity to decompress, although the effects vary between individuals.

2. Pet Ownership May Support Heart Health Through Healthier Habits

When people think about cardiovascular wellness, they often focus on exercise, nutrition, and medical care.

These remain essential.

However, pet ownership may influence certain behaviors that support a heart-healthy lifestyle.

Dogs and cats can contribute in different ways.

Dogs May Encourage Consistent Physical Activity

For many dog owners, walking is an established part of the day.

A dog needs appropriate opportunities for exercise, exploration, and outdoor activity.

Meeting those needs may encourage regular movement, even when motivation is low.

According to the Centers for Disease Control and Prevention’s physical activity recommendations, most adults should accumulate at least 150 minutes of moderate-intensity aerobic activity each week, along with muscle-strengthening activity on two or more days.

Brisk walking can contribute to that recommendation.

Potential benefits of regular physical activity include:

• Better cardiovascular fitness.
• Improved blood pressure management.
• Reduced sedentary time.
• Support for healthy blood glucose regulation.
• Improved physical endurance.
• Better overall functional health.

Not every dog walk qualifies as moderate-intensity exercise.

The pace, duration, terrain, and owner’s physical condition all matter.

Nevertheless, caring for a dog can make regular movement easier to incorporate into daily life.

What About Cats and Cardiovascular Health?

Cats generally do not require daily outdoor walks.

However, researchers have investigated whether cat ownership is associated with cardiovascular outcomes.

A study examining data from a long-term population follow-up reported associations between cat ownership history and certain cardiovascular mortality outcomes.

The research, Cat Ownership and the Risk of Fatal Cardiovascular Diseases, is interesting but does not prove that owning a cat prevents heart attacks or strokes.

A broader systematic review and meta-analysis of pet ownership and cardiovascular disease found mixed results and no statistically significant overall association for several major cardiovascular outcomes.

These findings remind us that correlation is not the same as causation.

What Does the American Heart Association Say?

The American Heart Association’s scientific statement on pet ownership and cardiovascular risk concluded that pet ownership, particularly dog ownership, is probably associated with reduced cardiovascular disease risk.

However, it did not establish that acquiring a pet directly prevents cardiovascular disease.

A sensible conclusion is that positive habits associated with pet care—especially regular walking—may support broader heart-health goals.

3. The Human-Animal Bond May Support Emotional Well-Being

There is something meaningful about being recognized by another living being.

A dog learns to identify familiar footsteps.

A cat develops particular ways of greeting trusted people.

Over time, repeated interactions create familiarity, attachment, and predictable routines.

Scientists studying the human-animal bond are interested in how these relationships influence emotional experiences.

Oxytocin and the Biology of Attachment

Oxytocin is a hormone and signaling molecule involved in several physiological and social processes.

Researchers have studied its relationship with human-animal interactions, particularly among dogs and their owners.

A study published in Science, Oxytocin-Gaze Positive Loop and the Coevolution of Human-Dog Bonds, investigated the relationship between mutual gaze and oxytocin.

The findings helped advance understanding of the biological processes involved in human-dog bonding.

However, the results should not automatically be generalized to cats.

Dogs and cats communicate differently, and the underlying mechanisms may not be identical.

What About the Human-Cat Bond?

Research on cats has also examined physiological and behavioral responses associated with interaction.

For example, a study investigating hormonal indicators in cats during human interaction explored measures related to cortisol and oxytocin.

These studies contribute to understanding human-cat relationships, although hormonal changes measured in cats should not be interpreted as equivalent changes in their human caregivers.

New Research Comparing Dogs and Cats

A study published in 2026, Human-Animal Interaction: Understanding the Role of Dog and Cat Interactions in Emotional Wellbeing, examined the relationship between everyday pet interactions and momentary emotional states.

Researchers found associations between greater interaction with companion animals and more favorable immediate emotional experiences.

The study did not establish that interactions with dogs consistently provided stronger momentary emotional benefits than interactions with cats.

Because the research was observational, it cannot demonstrate that pet interaction directly caused the emotional changes.

Nevertheless, it highlights the importance of considering both species in discussions of emotional well-being.

4. Pets May Provide Companionship and Help With Feelings of Loneliness

Loneliness is not simply the absence of people.

Someone may have regular social contact and still feel emotionally disconnected.

Moving to a new city, adjusting to retirement, working remotely, or experiencing a difficult life transition can change a person’s sense of connection.

For some individuals, companion animals provide familiarity and emotional comfort.

What Research Says About Pets and Mental Health

A systematic review examining human-animal interactions and common mental disorders found that evidence concerning pet ownership and mental health is complex.

Some studies report positive associations.

Others identify mixed outcomes or circumstances in which caregiving responsibilities create additional stress.

This means pet ownership should never be presented as a guaranteed treatment for anxiety, depression, or loneliness.

The Quiet Comfort of Cats

Cats can provide companionship through familiar, sometimes subtle interactions.

One may choose to sit beside its owner during a quiet evening.

Another may initiate play or follow household routines.

For people who appreciate a less physically demanding form of companionship, this may feel particularly comforting.

However, every cat has its own temperament.

Some are highly active and social, while others prefer limited contact.

Dogs and Shared Experiences

Dogs may encourage companionship through walks, training, play, and regular outdoor activities.

These experiences can provide enjoyable structure and opportunities to interact with others.

Still, the relationship should be manageable.

A dog with intensive behavioral or medical needs may create substantial additional responsibilities.

A Five-Minute Mindful Interaction

Try this simple exercise with a comfortable, receptive pet:

1. Put your phone aside.
2. Choose a quiet environment.
3. Allow your pet to approach voluntarily.
4. Observe its body language.
5. Offer gentle affection or play if welcomed.
6. Notice your breathing and the surrounding environment.

The goal is not to force relaxation.

It is simply to create a short period of attentive, positive companionship.

5. Pets May Encourage Social Connections

Some of the potential health benefits of having a pet involve interactions with other people.

Imagine walking through your neighborhood.

A neighbor notices your dog and asks its name.

A brief conversation begins.

Over time, repeated encounters may make the neighborhood feel more familiar.

Dogs as Social Bridges

Dogs can create opportunities for interaction through:

• Neighborhood walks.
• Dog-friendly parks.
• Training classes.
• Community events.
• Volunteer activities.

These encounters may not always lead to close friendships, but they can help people become more familiar with their communities.

Cats Can Connect People Too

Cat owners may develop social connections through animal-rescue organizations, adoption events, online communities, and shared interests in feline care.

Volunteering at shelters or helping with responsible rescue efforts can also provide opportunities for meaningful community involvement.

Why Human Relationships Still Matter

Animal companionship should complement rather than replace meaningful relationships with other people.

Pets may offer emotional comfort, but family connections, friendships, and community participation remain important aspects of well-being.

6. Caring for a Pet Can Help Build Healthier Daily Routines

Most adults understand the importance of regular movement, sufficient rest, and taking breaks from prolonged sitting.

The challenge is maintaining those habits consistently.

Caring for an animal can introduce predictable responsibilities into the day.

How Dogs Can Create Structure

Dogs need appropriate feeding schedules, exercise, rest, enrichment, and veterinary care.

These responsibilities may encourage owners to organize their mornings and evenings more consistently.

A morning walk can become a familiar start to the day.

An evening outing may help create a transition between work and relaxation.

How Cats Can Encourage Consistency

Cats also depend on regular care.

Their needs include:

• Appropriate feeding.
• Fresh drinking water.
• Clean litter boxes.
• Interactive play.
• Environmental enrichment.
• Comfortable resting areas.
• Preventive veterinary care.

For someone working from home, a short play session may provide a welcome break from prolonged screen time.

Can Pets Improve Sleep?

Some owners find their pets’ presence reassuring at bedtime.

Others experience sleep disruption caused by movement, nighttime activity, barking, or allergies.

There is no universal evidence that sleeping beside an animal improves sleep quality.

The best arrangement is one that supports adequate rest and animal welfare.

7. Companion Animals May Support Healthy Aging

Healthy aging involves more than preventing disease.

It also includes maintaining meaningful relationships, physical engagement, independence, and enjoyable routines.

For some older adults, living with a companion animal may contribute to these goals.

Dogs and Active Aging

An appropriately matched dog may encourage walking and regular outdoor activity.

However, the animal’s strength, behavior, and exercise requirements must be compatible with the owner’s mobility.

A dog that frequently pulls on its leash may be unsuitable for someone with balance difficulties.

Cats and a Quieter Lifestyle

For older adults who appreciate animal companionship but cannot maintain frequent outdoor walks, a suitable cat may be an appealing option.

Cats can provide companionship and opportunities for gentle interaction at home.

Nevertheless, they still require regular cleaning, enrichment, veterinary care, and financial resources.

A Sense of Purpose Through Care

Feeding, grooming, and caring for an animal may provide satisfying daily responsibilities.

However, pet ownership should never be prescribed simply to address loneliness or age-related challenges.

The relationship must remain safe, sustainable, and beneficial for both the person and the animal.

Dogs vs. Cats: Comparing Their Potential Wellness Benefits

Dogs and cats can provide different forms of companionship.

Neither species has been scientifically established as universally better for human health.

This table compares potential lifestyle patterns, not guaranteed health outcomes.

Important Considerations Before Getting a Pet

Although animal companionship may be rewarding, responsible ownership requires planning.

Common challenges include:

• Veterinary expenses.
• Behavioral difficulties.
• Housing restrictions.
• Travel arrangements.
• Allergies and hygiene concerns.
• Daily time commitments.
• Emotional distress during illness or loss.

An animal should never be adopted solely with the expectation that it will improve someone’s physical or mental health.

Pets are living beings with their own physical, emotional, and behavioral needs.

A positive relationship depends on responsible care and mutual compatibility.

7 Practical Ways to Strengthen Your Bond With Your Dog or Cat

1. Make Time for Screen-Free Interaction

Set aside a short period each day to focus on your pet without digital distractions.

2. Respect Your Pet’s Body Language

Learn to recognize signs of relaxation, discomfort, fear, and overstimulation.

3. Provide Appropriate Exercise and Play

Choose activities suited to the animal’s species, age, temperament, and health.

4. Maintain Predictable Routines

Consistent feeding, enrichment, and preventive care support animal welfare.

5. Encourage Mental Stimulation

Food puzzles, scent activities, safe climbing spaces, and interactive toys can provide enrichment.

6. Create a Comfortable Environment

Provide appropriate resting areas, clean water, safe spaces, and opportunities for privacy.

7. Appreciate Ordinary Moments

Not every interaction needs to become a wellness activity.

Sometimes, enjoying your pet’s company is enough.

Frequently Asked Questions About the Health Benefits of Having a Pet

What are the main health benefits of having a pet?

Potential benefits include companionship, opportunities for stress relief, more consistent routines, physical activity, and social interaction. Outcomes vary according to individual circumstances and the quality of the relationship.

Can petting a cat help reduce stress?

Some research involving animal interaction, including contact with cats, has identified changes in stress-related measures. However, the evidence does not establish that petting a cat consistently prevents chronic stress.

Does having a dog improve heart health?

Dog ownership has been associated with certain cardiovascular outcomes in observational studies. Regular dog walking may also encourage physical activity, but ownership itself has not been proven to prevent cardiovascular disease.

Can owning a cat prevent heart disease?

Some studies have reported associations between cat ownership and cardiovascular outcomes, while broader analyses have found mixed results. Owning a cat has not been proven to prevent heart attacks or strokes.

Are pets good for anxiety and depression?

Pets may provide comfort and companionship, but they are not substitutes for evidence-based mental health treatment.

Are cats as beneficial as dogs?

Both species can provide meaningful companionship. Their potential benefits differ according to behavior, lifestyle, and the quality of the human-animal relationship.

Can pets reduce loneliness?

Some people experience emotional support through animal companionship. However, pets do not replace meaningful human relationships.

Are pets beneficial for older adults?

They may provide companionship, routines, and opportunities for activity when the animal’s needs are compatible with the person’s circumstances.

Is sleeping with a pet healthy?

Some owners find nighttime companionship comforting, while others experience disrupted sleep. The best arrangement supports adequate rest for everyone.

Can people benefit from animals without owning one?

Potentially. Volunteering, participating in reputable animal-assisted activities, or spending time with familiar animals may provide opportunities for positive interaction.

Conclusion: Sometimes, the Most Meaningful Wellness Habits Are the Simplest

Modern wellness culture often encourages us to search for increasingly sophisticated solutions.

We track our steps, monitor our sleep, analyze nutrition, and look for new ways to optimize our health.

Many of these approaches can be valuable.

But well-being is also shaped by the relationships we build and the everyday experiences that give our lives meaning.

A dog may encourage us to step outside when we would otherwise remain sitting.

A cat may provide familiar companionship during a quiet evening.

Both can create opportunities for affection, responsibility, and meaningful interaction.

The health benefits of having a pet are not automatic rewards of ownership.

They are potential outcomes influenced by positive relationships, individual circumstances, and sustainable daily habits.

Science continues to investigate these connections, and important questions remain unanswered.

Still, one idea is worth remembering.

A healthier, more fulfilling life is not always built through dramatic changes.

Sometimes, it begins with an ordinary morning walk.

A familiar greeting.

A playful interruption.

Or a quiet moment beside an animal whose presence has become part of home.

And sometimes, those small moments are the ones that matter most.

Thank you for reading.

Sarah Denver

Human-Animal Interaction & Behavioral Specialist