I need some help, I don't know much about tetanus. My almost 3 year old was bitten by our family dog pretty badly on the ear on Thursday evening. It required many stitches. Our dog is up to date on all her shots. Our son has never had any. I just started reading about how dog bites can cause tetanus to get into the body and that vaccines are recommended. Do any of you know more about this? The ER doctor didn't say anything about it, but the paperwork we took home did. So, I am not really sure if we should go and get this shot or not.