Stay cool, calm, and confident—and follow these tips in the process.

The following dog breeds have appeared to be excellent choices for cat households. Again, you can never be 100% sure because any dog (or cat) can be an exception to the breed. These best dog breeds for cats are mostly calm and sweet-natured, and their owners have nothing but praise.

Some of them tip the scales at more than 200 pounds, so there's more to love! Before you consider adopting a dog, you need to decide what type of dog owner you are. If you live in a small space of would like a lap dog, you may prefer tiny dog breeds. If you'd like a larger pet (possibly even a guard dog), consider bringing home a large dog breed. There are many factors to consider before adopting any dog, but especially a large dog. We consulted with Dr. Nicole Savageau, doctor of veterinary medicine with The Vets, and James Ross, director of field operations for the mobile pet care service, to find out what potential pet owners need to know. Exercise needs: Before you adopt a large dog, be sure you're ready to give him an active lifestyle. According to Dr. Savageau, "Large dog breeds generally require more exercise compared to small dogs. They often have higher energy levels and need regular physical activity and mental stimulation to prevent boredom and behavioral issues." Training concerns: Be ready to put in the time and energy training your dog. Dr. Savageau explains, "Large breed dogs may have specific training concerns, especially related to their size and strength. Training should focus on proper socialization, obedience, and leash manners to manage their potentially powerful nature." Vet bills: Owning a large dog can be more expensive, and a potential pet parent should be prepared to spend more on everything from food to boarding costs. Medical costs can also be higher. James Ross says, "Pet owners with large breed dogs typically encounter higher veterinary costs. Procedures, surgeries, and medications are often more expensive for larger dogs due to their size and specific medical needs." Health concerns: Large dogs, such as Great Danes and Saint Bernards, are prone to certain health issues like GDV (Gastric Dilatation-Volvulus), arthritis, and hip dysplasia. Their shorter lifespans, averaging 7 to 10 years, are influenced by factors like their faster metabolism and increased energy requirements. Keep these factors in mind as you peruse this list showing off the largest dog breeds, complete with photos, weights, and life expectancy. With the proper care and training, any of them could become a loving member of your family.

"My little dog—a heartbeat at my feet." 🐶

The best dog food of 2025 includes wet, dry and grain-free dog food from brands like Purina, Royal Canin, The Farmer's Dog, Merrick and more.