I'm not a dog owner... Can someone explain how you'd discipline a dog to behave when you're not around? My understanding is that if you scold them for something they've done hours ago, they won't understand what you're scolding them for.
True.
You have to go with the :30 second rule. If they were lungeing, caught in the act of violating housebreaking, nipping/biting, chewing on "people" items you can scold them in the first :30 seconds or they don't get it.
The only exceptions are if they have chewed up a shoe or remote (etc.) if you take them over to the "scene of the crime", they will remember and will understand what they did wrong. Most times they will start cringeing when they see the "crime scene".
Depending on the size (and age) of a dog, having them in a travel crate (their own personal house) when you are out of the house solves many problems. Single dogs are more prone to get into trouble when left alone than two dogs. Most problems when a dog is left out when no one is home is mainly based on the fact that they love you and are angry when you "left" them-as they have no concept of time (except a odd brain clock that tells them about the same time you get home everyday).
The smarter the dog, the quicker they are trainable.
At 19 weeks, the male German Shepherd in the photo above was already house broken when we got him.
ROX