How long has the dog been this way? May I ask why you have not went already? Did the dog get into a fight? There are many questions to ask but If I was in your spot I could not get there fast enough, Please let me know how the baby is doing and I will be praying for the baby. I just may be an overgrowth in the mouth and they may cut it off, or infection, it could truly be anything, But please for your pet get it checked as soon as possible.