All responsible breeders should have a take back or buy back policy which insists that you contact them at any time for any reason you are unable to care for the dog. Ask for a copy of their contract and talk about the terms therein. A good contract can help you avoid misunderstandings, but remember that a contract is only as good as the two people that sign it. Now you are ready to purchase that new puppy or dog. All the phone calls and visits will pay off in a sound and healthy puppy and a breeder who might just become a new friend as well.
Hard work does pay off.