This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!Buzz·Posted on Apr 16, 2015What's Making These Strangers So Happy?The answer will make you think.by ryanwalker1370Community ContributorLinkFacebookPinterestTwitterMail Ever given a friendly greeting to a stranger's dog? Purina is pretty into that. Because we can walk by hundreds of people every day without giving them a glance. But, we'll drop everything if we see a cute pet walking by. Because they create happiness at any age. Because they bring us together, no matter who we are or where we're going.