I read an article recently on living with a dog with mental health issues which although I didn’t agree completely with all the advice given I’m sure would strike a chord with a great many dog owner.

Dogs with behavioural issues can be a huge emotional challenge for the people who love them, especially in cases that involve aggression. People can often feel stigmatised and isolated from the rest of the dog community.
The old saying “There are no bad dogs only bad owners” has one serious flaw, that some of the very best dog owners are the ones who won’t give up on their dogs no matter how difficult their behaviour is to live with.
https://www.theguardian.com/commentisfree/2016/sep/09/my-rescue-dog-is-a-nightmare-but-weve-lear nt-to-deal-with-her-mental-illness