If you are not home during the day, your dog should be kept secure in a dog-proof fenced yard and should never be left unsupervised when tethered. In the case of larger properties where this is not possible, then an appropriately fenced dog-run should be constructed, and the dog kennel, along with a plentiful supply of fresh water, should be placed within the run.
Ideally, dogs should be taken to council-designated areas where they can be safely let off the leash to run free. It is important to use these specifically designated areas not only to ensure their own safety (preventing the risk of being hit by a car) but also the safety of farm livestock and wildlife which can be threatened by a dog let loose in their habitat.
Puppy Roundworms can infect humans. To prevent this infection, puppies should be wormed regularly throughout their first year of life, and owners should be thorough with their own personal hygiene after having interacted with the dog. Tapeworms, Hookworms, and Whipworms can also infect dogs, and your veterinary surgeon can advise when to worm the dog.