The dog will be put down.
The dog escaped through an open gate.
I like when they say "escaped"....as if the dog had opened the gate instead of some irresponsible adult not closing it.
Well, depending on the type of gate, it could certainly be possible for a dog to hit the latch just right to get out, but any owner with a dog like that who doesn’t make absolutely sure that the dog can’t trip the latch is definitely being negligent.
Good ... and necessary.