Don't wake the baby

Let sleeping dogs lie and for God's sake don't wake the baby!
I felt that way this evening. My grandson fell asleep and we breathed a sigh of relief. He is a little over one. Can walk anywhere and climbing is a big deal.
Want something to stay in place? Don't have a toddler on the premises. Uh Uh. Doesn't happen.
Kids started coming home from different events, dogs started barking and it was a mad dash to quiet everyone before a whimper issued forth.
All was calm until our oldest and slightly neurotic dog, Tillie, barked to let us know there was something out the back door. Now, keep in mind, this dog is really my baby. I raised her from the time she was 20 days old. Bottle fed the pup, held her on my chest to let her hear my heart beat as she would her really dog mother. George brought her to bed with us to make sure she would be warm on winter months.
Really our baby.
Tillie barked. She has a herding dog bark geared toward getting the cattle's attention. Tillie barked and we heard the whimper coming from toddlerville. What should I do first? Get after the dog or shhhhhh the baby? The child's mother came down the stairs and comforted the boy.
I got after the dog. Quietly scolding her. The look made me feel bad. She was just trying to alert me...
I think I can only do one baby at a time.