This guy was supposed to go up for adoption (and I was supposed to try adding tack to him), but I ended up falling in love with his pattern. Reminds me a lot of my cat, actually.
This is a domestic Zeyama.
Like with many domestic animals, their coloration is far more varied than their wild cousins, as their coloring is dictated more by the breeder than the environment. Though bred more for specific tasks (pulling a carriage, riding, etc.) than appearances, due to the work of many dedicated breeders, we now have the many patterns seen today.
Traits normally seen as undesirable in the wild such as lighter stripes, lighter eyes, and neck fluff now show up within different breeds of the species, though careful effort is made to keep more "wild" blooded zeyama separated from man made colors, to keep both gene pools strong.
Being human pets, some may have accessories, like the scarf shown here.
This pattern is commonly referred to as "tortie tabby," as it resembles a similar coloring in cats.