Speaking at her arraignment this week, the dog's owner, Roxanne Grochoske, said she only brought her outside to get some fresh air - and then fell asleep inside.
It was reportedly the coldest day of the season in West Michigan.
Grochoske faces four years in jail for animal cruelty. A second dog was seized from her home.
Warning: Graphic Images follow.
The case echoes another tragedy, occurring just days earlier in Seaville, New Jersey. That's where a dog was found frozen to death on the sidewalk.