Based on this written description:
"A tall leathcail of beautiful stock - also known as a lake horse, which is a cross between a normal horse and a savage wild kelpie. Lake horses are calm and tractable creatures of great strength, and this one in particular is bred for pulling very heavy loads.
Its build is heavy and imposing, and its stoic temperament means it will not panic easily, making it an ideal mount for traversing Wispwood's haunted roads - or for battle. Its coat is a glossy black and its hair has the long, drowned look of a kelpie, with numerous silver charms and bells braided into it."