Goodbye Jack

I pray to God that this will be the last goodbye for a while because I can not mentally take it. Last night our beloved Jack was killed when he was hit by a truck in front of our house while we were working with our horses. For the past year I have been attempting to keep Jack, as well as his sister and brother in a large kennel that consists of basically an acre of land, and a huge enclousure as shelter. No matter what we did, Jack always would get out. Attempts were made to train them to stay away from the road but it is to late.
I fell like a failure in some ways. We do our best to provide a safe and loving home for these animals and something like this happens. I find myself asking what did "I" do wrong. I came to work today with a broken heart and continue to replay the events in my head. I think about the accident as well as my lovely wife strokeing jacks head asking him to go to a better place as he died. Family and friends helped up with preparing a resting place for Jack. I just pray that God works through this tragedy.