We have a lovely, loyal and affectionate cocker with significant behavioural issues. She has separation anxiety and gets distressed when we leave her, but the worst aspect is her behaviour towards members of our extended family and guests.
When she sees my mum, for eg, she goes absolutely wild, howling and barking and flinging herself at her. This continues for up to an hour. She barks at guests (particularly men, particularly if they have a beard 
). Once she saw my father on Skype and howled for TWO HOURS - she actually lay and cried to herself :(
If I take ds into the local play area, she will bark and bark and wriggle under one of the gates. The result of this is that no one wants to come round and she has to stay at home while we do activities we would like to include her in (eg the local fete and dog show in the park recently).
I've rung several behaviourists and class leaders, took her to puppy training when she was young and even had a couple of sessions with one behaviourist - but every SINGLE one has talked about dominance, or used aversives etc.
I see on the other thread that this theory has been discredited, but if so, why can't I find anyone in RL?! It's just bizarre. Is it like CC, where all MNers swear it is the devil's work but almost everyone in RL does it?