I need help with trying to recall a Christmas Cartoon Movie.

I'm sorry if this is not in the correct location.
Looking for a low budget Christmas Cartoon (maybe 2D) here's a desription of it.


Possibly from the 80's early 90's..

It involves some kids who live on a snowy mountain, I *think* with Santa. But there are also horrible abominable snow monsters who live in the forests of the mountain. They are big and white with tiny beady eyes hidden by a really long shaggy fringe. The children are warned to stay away from these monsters, but for some reason they end up in the woods. I think they're either rescuing someone or looking for a Christmas tree, it's so hard to remember so far back! My new-found friend in the US reminded me of a bit in which the children leave food out for a rabbit which is being chased by a fox, and another moment when a reindeer kicks the abominable snow monster's bottom and leaves a hoof print, which the snow monster sulks off to show his friends.
Another moment I remember is the children going ice-skating. They're all wearing puffy bomber jackets and hats and scarves and mittens. One of the kids is quite chubby. I think, but am not certain, that they have a dog too.
At the end of the movie/short, the children are running down the mountain away from the monsters, and the villagers scare them away. They then make a wooden sign with a cartoon of the monster's face on it with either a line through it or some other way of saying they're not allowed. I'm pretty sure there's then a moment where one of the kids alters the picture somehow, like making it squint or giving it bigger teeth or something, and everyone laughs