Inside!!!
(Heck... Bud doesn't even go out to potty EVERY time! )
I feel so bad for dogs that are left outside and forgotten about.
I tear up everytime I see one.
My husband is working in West Virgina and the house next door had a Female GSD that was left out on a chain all the time. She had fresh food and water all the time, but also had 3 kids running past her playing in the yard all the time and she would bark and cry while they were playing. All she wanted was attention. Oh it broke my hubby's heart! So he were throw her ice cubes or crackers or whatever he had. Then I gave him dog treats to give to her, he was ready to ask the people if he could take her! Then she was cleaned up one day, bathed... groomed. Looking good! Then she was gone!
My hubby had overheard her telling someone that she gave her to a family that had a huge yard and had the time to spend with her that she needed!

People that have dogs and just leave them in pens or tied up and have no interaction with them should not have dogs!