chickens attacked

[Ilene]

Hi all, hope someone can help me.
My chickens were attacked last night before they went into their coop.
2 of them have bruising and 1 has a puncture wound.
What is the best way to treat the puncture?
I've been using hydrogen peroxide but I recall my vet telling me that hp prevents the skin from healing.
Also, I think I remember that there is something I can give them to drink to help with the shock & give them additional strength.
I thank everyone in advance for any help.

 

[chicks4uandme]

May I ask what they were attacked by? And how bad is the wound?

 

[Ilene]

We're not 100% sure but my best guess is my dog. We thought we had the area secure but she must have found a new way to get in.
There is one spot on her neck that is open and seems to go right through to the muscle (or meat). When I looked at it this morning, it seems like it may already be closing. The other one doesn't have a puncture but some skin on her neck & face seems bruised.