Harper is working on the most important lesson in training camp! Doorway manners teach your dog you own and control everything inside and outside. SIT to go out and SIT to come in applies at any threshold. They need permission to cross through gates, bedroom doors, stairs, car doors, or any entryway. Having Harper SIT and wait to be released also promotes calmness and prevents door dashing.
If you make it a requirement every time, it turns in to a good habit that happens automatically! Never get tired of claiming those thresholds! Good girl Harper!