I would get a video camera or some sort of surveillance camera so you can see whats going on when you cant watch your pets or when your not home. I was wondering with the digging, maybe the dog was trying to get to moles? And maybe the moles were poisoned and he ate one? If I thought my dog was poisoned, I wouldnt be waiting for a paycheck to take him. The longer you wait, the more damage and possibly irreversable. I would go in begging, bring my big screen tv, the title to my car, my ring, whatever is of value for them to put in thier safe< trust me, they have one> to hold until I could pay them for the treatment of my animals if I thought one of them was poisoned. Then, my neighbors would be in a legal H from me because I would prosecute them until they wished they'd never messed with my animals. Anyone who would intentionally do that to an animal has no regard for any life. TAKE YOUR PET TO THE VET NOW!!
Rammy