just need to vent

1st neither dog has ever shown any type of aggression toward each other or people.
2nd the pit broke his chain that was only two weeks old.
3rd I do have females on my yard but neigther one is in heat or coming in.
4th it happen after I left for work at 400 am
5th if i thought for one minute that that any dog on my yard would harm my grandson they would be dead.

I have the pit in a locked kennel and the cat is healing , when all the wounds are closed i will see who the agressor is because i to have seen these cat males jump for no reason but at the time didnt think about it.

I just want to vent to keep from being to harsh on the dog and didnt intend to start a war.
thinks for all the advice.