Please be very careful about which breed you buy, don't ever buy a dog on looks alone!! A pedigree dog is a good idea to start with, you will heave a good idea what the temperament, the size and character the dog will have. Don't buy a collie if its not going to be mentally stimulated, don't buy an Irish Wolfhound if you are not at home for most of the day, don't buy a Jack Russell if you don't want to put a lot of energy into your dog, don't buy any dog if you cant devote the time, patience and money to rearing it.
We wave a rescue Irish Wolfhound, the guys we got it from couldn't believe the size of the dog at 7 months old and wanted rid of it as they couldn't cope, the dog was just over half grown. He is now full grown and a stunning beautiful dog, He was called "Spike" and came with a spiked and studded collar, the collar and the name went as we picked him up :) Irish Wolfhounds are the tallest breed and probably the gentlest breed on the planet, they obviously wanted a mean baddass dog!!