3. Great Dane

Nicknamed the “Apollo of Dogs,” the Great Dane possesses an incredibly sleek, athletic build and towers over most other breeds. Standing up to 32 inches at the shoulder and weighing up to 175 pounds, a Great Dane on its hind legs is often taller than a full-grown adult human.

Despite their imposing stature, Great Danes are famous for their comical, affectionate behavior. They are convinced they are lap dogs and will happily back up and sit directly on your couch—or your lap—if you let them. They are generally quiet indoors, making them one of the best calm big dog breeds for owners who want a relaxed indoor companion. You simply need to ensure your home has enough physical clearance to accommodate their long limbs and powerful, happy tail wags.