Ending the walk and going home when she starts going for you will not deter her. Dogs live in the moment, she won't understand that she's being taken home for biting, she won't be able to make that connection
I was thinking that this behaviour probably starts early on in the walk?
And that the lunging, biting etc may be reinforcing, therefore, the second there is any beginning of jumping, biting etc I would immediately end the walk so the bad behaviour isn't reinforced.
With my own dog for example, she has to sit calmly to have her lead put on, walk behind me and sit and wait while I lock the door.
If there is any bouncing/pulling/breaking sit etc we are straight back in the house, leash is hung up and there is no walk.
Sorry if I wasn't clear.
Honestly OP I'd say that you've been unlucky with this dog I'm afraid. It shouldn't be this hard. Whether she's got some dodgy genes in there, or perhaps she's just neurotic. Who knows, but this is not normal behaviour
Quite possibly but then she has also been rewarded for this by scattering treats hasn't she?
Maybe it's been inadvertently reinforced?
All of my dogs have been ridiculously over excited/stimulated on walks at one time or another and NEVER have they shown any aggression towards me
Mine has never to the extent of the OPs dog but I have certainly had her bounce about and bite and nip me although the bites were massively inhibited, I certainly didn't have to prize her jaws off me although she did tear and ruin many of my clothes by hanging off them 😡
The fact the dog is latched into flesh by the sounds of it? is worrying given her size hence why I think actually OP should see a registered behaviourist.
I'm not sure it's 'aggressive' although obviously none of us have ever met the dog.
It sounds more like overexcited, poorly inhibited play biting?
To me anyway.
Still dangerous though.
If they had, I would have gone ballistic. No doubt that will be a very unpopular statement but there you go
If mine had ever properly bitten down meaning I struggled to get her jaws open (rather than nips and inhibited biting) so would I.
I have six working dogs and never have they growled, put their teeth on me or shown any aggression whatsoever. They know their place (another unpopular view)
I don't agree with the idea of pack theory necessarily but I agree they definately need boundaries, clear ideas of what is and isn't acceptable imo.
We follow NILIF here and I have no qualms whatsoever about telling her off if she does something naughty.