This horse is dark brown. I have one of a similar color - it is registered by the breeder as dark brown.
A bay horse has more of a reddish or at its very lightest, a sandy color.
Beware, there are some who call any horse with a black mane and tail that isn't a buckskin or dun, a 'bay', regardless of its body color.
But bay consists not just of point color, but also a body color - that reddish brown color, originally 'badius', in Latin.
In general, people tend to like to have a 'black' horse and so people often call dark brown or dark liver chestnut horses 'black', especially when they're selling it.
However, you can call your horse whatever color you want.
Last edited by slc; 02-25-2011 at 08:45 AM.