As any owner will tell you, having a dog can change just about every aspect of your life for the better. There's nothing like having a friend who is completely loyal, caring, and totally stoked with everything you do. If you live in a city, however, owning a dog is certainly more difficult. You'll have to hire a dog walker, ask friends to babysit, and the more rambunctious breeds won't work for you at all. That said, all the benefits gained from adopting a pup in the 'burbs remain the same in an urban environment. Here are 25 reasons why bringing home a dog will be the best investment you'll ever make, no matter where you happen to reside.