RE: dog died
terbzz,
Harsh as it may seem, I definitely agree with Matt.
1. A dog must either be confined or under supervision (that would have prevented the dog from going to the neighbor's place) -- and if the neighbor did poison the dog, it would have prevented that too.
2. When a dog was that sick, why wasn't it taken to the Vet?
I hate to say it this way -- but there is no other way -- the dog's death was your fault.
.