As cute as puppies are, I prefer adult dogs over them. Adult dogs usually have some training, are housebroken, and you know exactly how big they are so there are no surprises down the road. Besides, I tend to go for the dogs (or cats) who are usually overlooked, not as desirable to the public or are, no pun intended, underdogs. Maybe these special kinds of dogs are grateful to be given a chance, or maybe they are just that special, but they make the best dogs in my experience.

I know you're not myself, so your preferences in dogs are somewhat different, but I would strongly suggest adopting one from a shelter or rescue organization, rather than buying one. I also strongly suggest looking at different types of breeds and whatnot so you can get a semblance of what you like in a dog, and which breeds are a good match to you and your lifestyle. For example, if you are the kind of person who likes to spend her time at home, curled up on the couch with a good book, tv show or movie, obviously get a breed that is more inclined to be a couch potato rather than one who is high energy. Or if the opposite is true, and you like to spend your time outdoors, doing a lot of hiking and adventuring, get a dog who has the energy to match.

I would also discuss bringing another dog into your home with whomever you share your home with, so that you are all on the same page and no one is taken by surprise. Especially talk with the spouse, as the adoption should involve both of you, and make it all the more special and you can both determine together beforehand if you have the ability (financially and time-wise) to add another dog to the family.