A startup called Netatmo already launched a security camera this summer that sends the names of people it recognizes to the homeowner's smartphone, as well as notifications about unknown visitors. (canadianbusiness.com)
Pets that are frightened by unknown visitors and noises may also be more likely to bite out of fear. (vscot.com)
Family Life Get along well with children and other animals, although can be belligerent with unknown visitors (all-about-puppies.com)