Sometimes I have adult dogs for re home. This is because to keep a bloodline going you have to keep young puppies as I do not like to over breed the mums and at 4-5 years old they are ready to settle into a pet home and "retire" . They of course still have plenty of energy and play but without the silly young things , like chewing and are better in the house as then content to wait for their walks and more ready to lie quietly while waiting.