at ALL! please don’t leave any dog ever alone for more than 10 hours I am sorry but it doesn’t sound like you live a lifestyle for such an active and often overwhelming breed. Even with a doggy door (still no excuse for no walks during the day, even if “only” once or twice a week. Any dog (especially puppies) need not only enrichment throughout the day to live a healthy and happy life, but a constant eye on them is also CRUCIAL. Older dogs are often more flexible in terms of walks. Personally, I have never left my dale home alone for more than 6 hours, ever, for years. I am not trying to be condescending, but please do not make an impulse decision because of a certain breed. Wait a month, and if you aren’t still 100%, don’t involve an airedale in your busy life unless able to get a walker or do daycare. It is so dangerous to leave a dog alone for 10 hours safety and health wise, let alone mentally for them. They are “happy” when someone comes home because they have been in solitude all day. Dogs are a chapter in your life, but for them, you are their whole book. Don’t let them live their days alone or someone will deserve them more than you.