I wish I could take the credit for Doodle. But she was trained and taught before I brought her home.
If she is still reliable you can take credit for that. So many times a well trained animal goes to a new home and within months the good manners and training evaporates. Seen it many, many times with horses, not quite so often with dogs but they don't tend to change hands so often.
Unfortunately people often reinforce bad behaviour without being aware of what they are doing, and then complain because the "stupid" animal has developed bad habits!
I concur. If it isn't maintained, then behaviors erode.