I'd bring it AND the dog inside

Why not do what they suggest for fish ponds and put a couple of ping-pong balls in the dish? That may only work if the water is deep, but I used it on our bird bath and it never froze over. ( On the other hand maybe there is a risk of the dogs eating/choking on the pin pong balls, so maybe a larger light weight ball would be better)

. If your dog is already trying to stay warm in freezing conditions, drinking ice cold water, even if it's not frozen, is not going to help him maintain his body condition. An electric bucket will keep the water much more temperate, which means he'll drink more and stay healthier!Add me to those who suggest that neither the water, nor the dog, will freeze if they are brought inside.
Add me as well.
My friend just told me he found a cat outside his house that apparently froze to death during the night. Pets should be INSIDE the house at night.

I may not know you...but I love you.
I, too, would bring them both inside.

Thank you very much.
I stand by my opinion that if it's cold enough for water to freeze, then it's cold enough for a warm-blooded animal to freeze.
I'd bring it AND the dog inside
Ditto.Add me to those who suggest that neither the water, nor the dog, will freeze if they are brought inside.
Add me to those who suggest that neither the water, nor the dog, will freeze if they are brought inside.