Why? They live perfectly comfortable lives as pasture puffs, even with severely swayed backs.I don't know if this was photoshopped or not, but horses can become that swayed. I have heard that they are not in pain but I probably would have a put that particular horse down.
It's unttractive, yes, but not painful. The pasture next to the barn I board at had a horse with a sway back as bad or worse and he still trotted around the pasture, grazed, rolled and basically lived a happy life untill he was put down last year.Why not? in pain or not, how can you assume a horse with deformity this severe be living a comfortable life?