I am so sorry!
But...I just want to tell you I saw green for the first time on one of mine yesterday and I grafted in early March! (Scion to dormant R/S). I had another take a week ago, one that looked kinda dead, that I just left because I had nothing else to graft to it.
I think it's definitely great to post pictures and discuss with the other members so that they can help you.
But I do think it's a bit early to declare defeat. I've learned, especially with apples, that they will try their very best for you, and as long as there's a remote chance to make a graft, not to give up on them.
And, as far as your grafts destroyed by animals, let me tell you about one of my experiences.
My graft on one rootstock was terrible. I knew it. So after not seeing anything for about a month, I trimmed down the scion and the R/s a bit (my initial scion was probably too long...) I regrafted using a different grafting method. But I kinda felt like the new graft was a pretty awful attempt as well, and didn't see any growth for another two weeks. Well, I looked at that scion and figured I'd give it one more chance, because what did I have to lose? I cut the scion on both sides until I found green wood on both sides. Cut the r/s back a half inch or so. Regrafted for a third time! Guess what? The scion's two remaining buds are swelling, and I just saw a tiny hint of green emerging from one!
So, if any of your scions are still alive, assuming you don't have any other plans for that r/s, why not try again and bind it better this time? I thought there was no way mine would make it, but the apples taught me that where there's life, there's hope!