If you end up in a situation where you have absolutely no choice but to re-home your puppy or adult dog, please read these warnings below first.
In a private sale, you have no rights either as a purchaser after you have left with the dog, or as someone selling a dog.
If you find out you find out that the new owner lied about their circumstances, or even that they have sold the dog on, there isn't anything you can do about it.
If you re-home your dog badly, or you have lied about its problems, it will come back very quickly.
Think about what you will charge for the dog and whether you are also selling the papers with it. A lot of current puppy farm breeding dogs were bought privately from pet homes. Would you want that to happen to your dog? There is also a huge current market for dogs being sold abroad for fighting,fur farming and puppy farming. It's a hard process, but find out as much as you can about your prospective new owner, and if possible visit their home to ensure conditions are appropriate.
Even though a sale agreement is a legal contract, and as such both parties are required by law to adhere to its conditions, this doesnt always happen!
Good, responsible breeders will take back a dog they have bred or if that isn't possible then they will try and help. If you have bought from a reputable breeder, give them a call and ask for help. If they for whatever reason they cant help, there are other options.....
Specialise in a particular breed
Like the RSPCA, The Dogs Trust, Battersbea, etc.
All these Rescue socities clubs and organisations rely on public support and donations PLEASE PLEASE donate what you can - Every little helps!