TO CHANGE ORDER of a number of posts being displayed.
In dashboard choose Posts on left side navigation.
Filter by category if necessary.
Here’s the hardest part. Change the date and time. The most recent is first. If puppies are listed on same day, the latest time is first. 19:19 beats 19:16. I have found it most helpful to list out the posts I want to sort and assign a time before I go into the quick edit. This way you don’t have to remember what you did the post before. After you are done, the future posts of puppies will appear on top. If you change the order to Ascending, then the oldest will be on top.