The leading reason for owning or keeping a dog is to have them as pets. 
However, the lovely canines have proven to be more than just fun to have around. They are resourceful in numerous other ways, such as being used in guarding, guiding and helping people with physical challenges, and sniffing during searches and rescues.
That said, dogs are not universally equipped to serve all these roles. Different breeds fit different functions. That is why the question ‘which is the best dog breed?’ is difficult to answer without a purpose attached to it.
People who have had a positive osteoarthritis diagnosis, for instance, can benefit significantly from service and assistance dogs. These dogs can be used to run errands for their owners when they experience periods of pain and difficulty in mobility. They can be sent to fetch items from a distance or even open doors within the house.
There are specific breeds that fit well into assistance roles. They include the Labrador, Golden Retrievers, German Shepherds, Poodles, Great Danes, and the Pit Bull. A common trait among all service dogs is intelligence, which makes them easy to train for different tasks. Depending on the specific job, features such as strength (a German Shepherd will handle more cumbersome tasks better than a poodle), calmness, work drive and tidiness may be necessary.
