I am so sorry this happened to you. Don't blame yourself. You never know what a dog is thinking in that one second of time. I may be wrong but I believe that the dog jumped up to grab a "toy". To a dog they are moving, noise making, toys to be caught and played with. A ball that moves on its own. It seems you have one dog of I think you said 3 that has a keener interest in the "toys" in your garage and then in your hand.
We have a teacup poodle who jumped up onto a 3 ft table from a sit position to see what I was carrying into the house (a new puppy).
If you observe, is the dog that greets you at the door when you come home,the one with the "so what did you bring for me" the one who got the chick?
It will take time and training, and it may never resolve but things could get better with the dogs behavior.
Hugs to you for having this happen and to have to witness it.
We have a teacup poodle who jumped up onto a 3 ft table from a sit position to see what I was carrying into the house (a new puppy).
If you observe, is the dog that greets you at the door when you come home,the one with the "so what did you bring for me" the one who got the chick?
It will take time and training, and it may never resolve but things could get better with the dogs behavior.
Hugs to you for having this happen and to have to witness it.