Well snapping at dd1. I was not there but Dh claims that she was just sitting next to him and did not move when he turned on her snarling and snapped at her arm. She has a bruise apparently.
He is a very strong dog and I have no doubt had he wanted to hurt her she would be in A and E not in her bed. I also believe she probably did move and nudge him, even if just slightly, that's all it seems to take with him.
I have a plan to deal with this, but would like your thoughts on if it's the right thing. DH's plan involves drop kicking the dog out of an upstairs window, which obviously will not be happening, well, not to the dog at least 
My plan involves:
Investing in yet another bed, to go under the table in the living room, so he can be near the family, but still have his own space. He has a bed which is meant to be moved to the living room during the day, but no on ever bothers moving it.
Not allowing him on the sofa at all during the day/early evening when the dcs are up, as he gets very possesive over his space on the sofa - this is a rule already in place, but Dh doesn't always follow it.
Not allowing him on the sofa unless he is invited up by me or DH at anytime day or night - this rule is one that is also already in place but forgotten about.
Asking dd1 (under very close supervision) to invite the dog onto the sofa and feed him treats so he starts to equate sharing the sofa with the dc as a good thing that brings him treats - this is the new bit.
Or should I just keep him off the sofa, full stop? the thing is I like having him up there with me for cuddles.
Also does anyne have any insight as to why he does not snap at me when I sit by him on the sofa, if I move he simply growls at me and the buggers off to sulk somewhere. It's only ever DH and the dds he snaps at.
We are out of training sessions with the behaviouralist and I don't want to book anymore because he's booked in for obedience classes after our holidays, those have cost me £70.