Reading through the thread this morning. There are very interesting comments and motives put forward. BUT As a woman, with a dog living in a dodgy part of London, I'm terrified of the dog being stolen from me, but I would not carry a weapon with me, it's illegal and I doubt Julia would have either. I personally feel a dognapping gone wrong isn't what has happened here, why leave the dog? Locally to me atleast 2 women have been attacked for their dogs, neither badly hurt but they got away with the dogs within a matter of seconds of attacking them. If this was an attempted dognapping, they would have taken the dog with little thought to Julia.
*Update Edit, I have just seen on Kent news the dog was a Jack Russell, so small enough to have been scooped up and taken*
I have an awful feeling this was a random attack - Maybe someone who was lying in wait for a victim - Possibly someone who had been hanging around in the days prior - Also I noted a comment regarding the helicopter that was deployed, could they be thinking that this is someone living off-grid in woodland?