Those Walking Horses on the video are trained for heavy shod showing. This is where they put a heavier and thicker shoe on the front feet and a lighter thinner shoe on the back feet. This makes them drop thier butt and keep thoes front legs in the air.
If done correctly the horse will not have any problems. Of course after a while it will wear and tear on the horse. Most of those horses only show a few years like that then are retired to light shod. Light shod is when they don't have the extra heavy shoes on the front.
Leave it to humans to make an already beautiful animal look like a freak for the purpose of "fashion". To me those horses look weird and uncomfortable. And trust me............. as a QH owner and lover, I personally feel the same way about the peanut roller western pleasure horses........nothing natural or pretty about the way they move either.
Hello I have a 6 yr old walking horse that was show as a 2 yr old flat shod then was sent for more tougher training and she didnt work out so I bought her and for 2.5 years she did nothing but be a horse and get loved on now I have started rideing her bare foot and she is so smooth to ride. It is a total joy to ride her and she does bob her head up and down which is a trait in a lot of the old line walking horses . And as long as I live and own her she will never be treated the way the walking horse groups want then treated she is a happy horse to ride and loves people she is big and lankey with a head to match but she is great to ride is smooth and comfortable she is my first walking horse and I ride her western .