Talk to breeders and owners to determine if your chosen breed truly fits your personality and lifestyle. Ask about genetic health issues - all breeds and all lines have them. Ask to see health certifications and what kind of health guarantees the breeder offers. Expect to answer some questions about your home, family, children, last pet, etc. You are bringing home a new member of the family.
Dogs are social animals, as are people.
Providing food, water and vet care is not enough. You must be your dog's pack leader and companion. If you are not willing to include your dog as a member of the family, you're not ready to have a dog in your life. Look for a dog that is friendly and who has obviously received loving, gentle handling. Be aware of an animal that is nervous, high-strung or very timid.