Hello,
I think the first thing to think about is what breed of dog suits your lifestyle, and have you got the time to commit yourself to owning a dog.Puppies take up a great deal of time and this continues throughout their lives. Dogs need regular excersise and play, trips to the vets, grooming etc. Also look at the cost, vet bills, food, equipment and insurance add up.

These are the things to look for when choosing a puppy.
Make sure the pup is interested in you and is playful with other pups.
Puppy should not be skinny and his coat should be shiny.
Check the eyes and nose. They should be clean with no discharge.
Check under the tail this should also be clean.
If you are buying a pedigree pup ask to see certificates of health screening from both parents.
Ask to see the parents. Mother especially and look at her temperament.

I hope this helps you. Good luck in your search.
Chris.

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A DOG MAY OUTGROW YOUR LAP,
BUT NEVER YOUR HEART.