Is Seabiscuit buried in one piece or was his head separated from his body?

Seabiscuit was a once-in-a-lifetime type of horse. He was not only loved by his millions of fans across the country but he was dearly loved by Charles Howard. Mr. Howard would never have dismembered or otherwise mutilated something that he loved so much. In fact Seabiscuit's grave is unmarked for a particular purpose. Mr. Howard was afraid that as famous as the horse had been, someone might try to desicrate his grave, possibly to sell to the highest bidders. Someone tried it with President Lincoln's body, so why not a famous horse like Sebiscuit.