One of the first things to consider in selecting a type of dog is the size of dog you would like. There are four categories: Giant – over 100 pounds, Large – 50 to 99 pounds, Medium – 20 to 49 pounds, and Small – 19 pounds or less. AKC pure breed dogs can be on the high strung side, but rather intelligent. Mixed breed dogs have been known to be more agreeable and friendly sometimes. Once you figure out the size and type of dog you want, carefully research your selection, and be sure before adopting. After that, enjoy your new best friend!