“A three dog night, which as far as I can tell, means like, harsh, like probably cold night. Comes from dog sledders, when they were traversing the wilderness. A three dog night would be a night where you would have to like cuddle up with three of your dogs to be able to stay warm for the night.”
The informant is a student at the University of Southern California and he does not recall where he first heard this piece of folklore. It is a saying that is normally only used in extremely cold weathered countries where sled dogs and freezing temperatures are the norm. It has a literal meaning behind it, where in these extremely cold areas, people would huddle and sleep with their dogs in order to stay warm for the night. A three dog night is an especially freezing night, because a person doesn’t need one, or two of their dogs to stay warm, but needs three.
It is said that the band Three Dog Night is named after this saying, where one of the vocalist’s girlfriend heard the phrase being used in a documentary about Australian Aborigines. However, there has also been debate about the saying originating with the Inuits. This search unable to trace back to a single point indicates how the original source was lost and this saying has now become like many other pieces of folklore; with no one author.
Annotation: The Australian band Three Dog Night formed because the vocalists girlfriend heard this piece of folklore about indigenous Australians.