Large dogs are breeds that typically weigh over 50 pounds and can stand 24 inches or taller at the shoulder. Common examples include Labrador Retrievers, German Shepherds, and Golden Retrievers. These dogs often require more space and exercise compared to smaller breeds, making them suitable for families with ample room or active individuals. Due to their size, large dogs can be more challenging to train and manage, but they are often known for their loyalty and protective instincts. They can serve various roles, including family pets, service animals, and working dogs in fields like search and rescue or police work.