I built some Sheep Mob Statues at a 1 pixel : 2 blocks scale and in 16 color variants (though some of the brighter colored sheep could look better).
It took some time to get the dimensions right for these statues because the sheep texture uses pixels of different sizes and not all of them are actually square. Maybe it's because it was one of the first mobs added to the game. Kind of interesting.
You can find schematics for LiteMatica and WorldEdit (for all 16 variants) as well as a world download with all statues in the download.
Feel free to download and use the statues however you like, but please give credit if you do :)
Check out my Mob Statue Collection for more builds like this!