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.
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.