Getting a puppy you should realize that you are bringing a new member of your family home. Its character is not yet developed and you are the one to help your puppy grow up. What your dog will be like in future depends on what you want it to become. Your dog will most probably resemble you in some of your habits, your attitude and they way how you treat other people and animals.
If you want your puppy to sleep in your bed then your dog will be pleased to do it. If you feed your dog while you are eating then it will sit near the table and drool. If you encourage its aggression to people then your dog will become vicious.