It's called an "Indian Shuffle" or single footing. My Dancer does it...I think. It's hard to tell. Everyone who sees her move says she's gaited, but she doesn't get ridden enough to sharpen up that gait...whatever it is.
Oh wow... I was thinking Blood Marks... Flea Bitten Gray? But he could possible be Chimeric??? Like a brindle? He's so interesting. Do you have more pics? It may also be an old fungus that changed his coloring and he's a chestnut... but I don't know.
My husband says that it is not a skin irritation that is his coloring. I am still open to all options. My vet is even doing some research into a byelorussian harness horse. There doesn't seem to be any info on them but in any photo we see there is a gray and white spotted one that looks remarkably alot like him without of course the 3rd/4th color lol
If he had a skin problem in the past that has been healed, his coat could very well grow back in all sorts of funny colors. However, I don't think there is any way you could tell if this horse was born this way unless you had a foal picture of him.
Well it could be a PAST skin infection that he got over and the fur discolored that way when it grew back out. I know there is a few pictures of a stallion that this happened to but I can't for the life of me recall his name. I honestly think it is either that or he is chimeric..... The only way you'd know if it is chimerism is if you get him tested.