Choosing the right breed
When choosing a breed of dog, one of the most important aspects to keep in mind is size. While all breeds are tiny and cute when they are puppies, some may grow to quite a large size that may not be conducive to your living area and lifestyle. If living in a small home with little to no yard, a toy breed may make more sense for you. On the other hand, if you have large amounts of room for a K9 to run and play a larger breed with a high activity level may be a better fit.
Another important thing to consider when choosing a pet is it's energy level. Many breeds require a large amount of exercise and stimulation throughout the week and it's important to make sure this is something you can provide for your pet to keep them happy. If you're looking for a dog to keep pace with you while running or hiking, a German Shepard or a Shorthaired Pointer would be a great fit. Adversely, if you're looking for a couch-potato companion or a pet to who is a pro at lounging, a Schnauzer or English Bull Dog might be more your speed.
Finally, when considering a new dog you should always consider any other pets you currently have or the amount of socialization the dog will receive. Certain breeds such as Retrievers enjoy companionship with other animals while other breeds such as Anatolian Shepherds are more independent and prefer less companionship with other animals.
Obedience training is always a good idea when you get a new dog to establish a handler and dog relationship with appropriate boundaries. When considering a new pet, look into what is available in your area to find the right fit.
Bottom line: It's incredibly important to do your research before committing to a new pet. Making sure your environment and lifestyle are suitable for the breed you choose are key to a happy handler and dog relationship.