Ok so I probably saw this movie sometime between 2008 and 2012, though it could have been later. Definitely before 2016. It was an animated Christmas movie in English that I probably saw on a teletoon or cartoon network or something like that. I’m from Canada, not sure if that will make a difference. From what I remember there was a little orphaned boy, maybe blonde, who was in the Arctic or somewhere snowy and cold. I think he was looking for some kind of Christmas miracle or magic thing to find his family. There was an Inuit girl who was helping him. She had a sled dog companion who I seem to remember tragically dying while rescuing him. I also feel like the kid was kind of annoying about being an orphan and the Inuit girl giving him a bit of sass or something telling him his life wasn’t so bad. Anyways that is all I can remember. Someone, please tell me this wasn’t some fever dream because I remember being traumatized when the dog died.
Could it be Tukiki and His Search for a Merry Christmas? it’s an older movie, and I don’t remember a dog dying, but i saw it so long ago I’m not sure.
https://www.imdb.com/title/tt0269988/