Talk:The Pet Carrier/@comment-28082245-20160528080229/@comment-4273152-20160528085924

https://books.google.co.nz/books?id=724dAQAAMAAJ&pg=PA453&lpg=PA453&dq=robert+shuland&source=bl&ots=DVRmO5yISY&sig=DDUr0RoAZZg7fwIo_7rk81vTwxw&hl=en&sa=X&ved=0ahUKEwiYzpj8svzMAhXoHKYKHRoXDqMQ6AEIIjAB#v=onepage&q=robert%20shuland&f=false

I found this excerpt from a rather old text. Sir Robert de Shurland's horse saved his life by swimming him somewhere, but died afterwards. I'm assuming the bone has some sort of protection or escaping properties, based on the account.