After learning per-requirements for Selection of Dog Breed, now you are going to buy a breed as your companion. This is an important thing that what Dog Breed you want to adopt. The size, the temperament and age matters a lot for selection.
The first thing in selection is size of breed. According to your affordability in respect of space of your apartment or home, temperament and other things select the size of breed. That might be a small, medium or large dog you can buy. Your choice might be small dogs which you can carry in your laps, in small shoulder bags while traveling or medium dogs curling in your legs or large dogs scaring the potential intruders.