My only advice, is don't automatically pass by that pathetic, gangly, skinny one in the back of the cage shivering. Get her out, give her some cookies and love on her. She may make one heck of a companion for the next 13 years...and a huge hole in your heart when it is her time to go. Beyond that...you'll know. I'm fairly new-again here, but you knew with Peyton. Spend some time getting to know the dog and all that. There will be trials, there will be self-doubt, but in the end it almost always works out perfectly if *you* put the work in to do so.