I am really sorry to hear this. My condolences. It's a terrible thing to lose a dog this way.
They're very special dogs - Schnauzers. What you write about yours is very atypical because they are usually highly territorial and protective. Oddly enough we also have one that could be Toby's twin. Everything you write about Toby could have been written about Jack - the guy on the left below.
Again my condolences.