The definition of ‘good’ and ‘bad’ differs. It depends on the cultural background, other people’s expectations, context and even our personal code of behaviour. Often ‘bad’ means just: ‘an otherwise acceptable behaviour, but done in the wrong place, at the wrong time’.
Good and bad habits are equally easy (or difficult) to form. They need rewarding, repeating, reinforcing ( sometimes also: redirecting). Easy to remember, easy to do.
Brian barks. As (some) dogs have been bred for years to be guards, it’s not a feature that is necessarily bad. There’s nothing obsessive about barking when someone invades the space that a dog is meant to defend/guard. Yet, sometimes, I like people to visit me, so Brian needs to learn to bark less (he’s getting there, one woof at a time).
His mouthing is pretty much gone now. Nipping at people’s legs (even once is once too many) is my biggest concern, so I will work on that till I’m absolutely sure it will never happen again. Mouthing and nipping at ankles are two different types of behaviour and need to be addressed separately (that’s a good article BTW)
If you ever wonder why I hardly ever write about training Lily: my husband is wrapped around her little claw, she’s his little princess and there’s no way I can spoil this perfect, abusive relationship. To make things perfectly clear: she is the abuser. My husband has been dominated by cats for years so he just treats Lily like yet another cat. Just cuter and more manipulative (she needs protection, ‘she didn’t mean it, just look at her little face’)
Lily is easy to train but she is not stupid and is not going to work for the rewards she can have for free.