The Orange Horse

An orange horse is desperate to find his long-lost brother, but the only clue he has is one half of an old photo. The horse decides to advertise, but the answers he gets leave him feeling hopeless. Then, one day, the orange horse meets a brown horse and they immediately become good friends. Coincidentally, the brown horse also has one half of an old photo. Could he be the long-lost brother the orange horse has been searching for?