10 Major Differences Between Large and Small Dogs 

Dogs come in all shapes and sizes, from tiny Chihuahuas that fit in a purse to towering Great Danes that take up the entire couch. But beyond just size, large and small dogs have very different traits, from temperament to health needs.

If you’re thinking about getting a dog, it’s important to consider how size affects personality, exercise needs, and lifespan. Whether you’re drawn to pint-sized pups or giant gentle giants, here are 10 key differences between large and small dogs.

Lifespan

Small dogs generally live longer than large breeds. While a Chihuahua can reach 15+ years, Great Danes often only live 7–10 years. Larger dogs age faster, leading to shorter lifespans due to heart and joint problems.

Exercise Needs

Large dogs need more space and exercise to stay happy and healthy. Small dogs may get their energy out with zoomies indoors, while bigger breeds require longer walks, hikes, or play sessions to burn off their energy.

Appetite & Food Costs

Bigger dogs mean bigger appetites! A Great Pyrenees eats significantly more than a Pomeranian, and feeding large breeds can be costly. Small dogs eat less, making them cheaper to feed, but they can also be picky eaters.

Training & Obedience

Small dogs often get away with bad behavior because they’re easier to manage. Large dogs, on the other hand, must be well-trained—jumping or pulling on a leash can be overwhelming if they weigh over 100 pounds!

Temperament Differences

Many small dogs have big personalities—they can be feisty, bold, and even bossy. Large dogs, however, are often more easygoing and gentle, with many having laid-back, affectionate temperaments.

Grooming Needs

Grooming depends on the breed, but large dogs generally take longer to bathe, brush, and maintain. Small dogs are easier to manage, and a full grooming session takes a fraction of the time compared to a big, fluffy dog.

Space Requirements

Small dogs adapt well to apartments, while large dogs need more room to stretch out. A Mastiff in a studio apartment? Not ideal! A Yorkshire Terrier, however, can be perfectly happy in small living spaces.

Vet Bills & Medical Costs

Large dogs tend to have higher vet bills due to breed-related health issues, medication dosages, and surgeries. Small dogs still require care, but treatments generally cost less since they need lower doses of medication and anesthesia.

Strength & Handling

Walking a 20-pound dog is very different from controlling a 120-pound powerhouse. Large dogs require strength to handle properly, while small dogs can easily be picked up or managed with minimal effort.

Aging & Mobility Issues

As they age, large dogs struggle more with mobility due to joint problems like hip dysplasia. Small dogs may also slow down, but they’re easier to carry and manage if they develop mobility issues in their senior years.

Conclusion

Whether you love tiny lap dogs or big gentle giants, both small and large dogs bring unique joys and challenges. Choosing the right size depends on your lifestyle, space, and commitment. No matter the size, every dog deserves love, care, and plenty of belly rubs!