“We are deeply saddened to confirm that a production horse died,” said a spokesperson for Amazon Studios on Sunday morning. “The incident took place in the morning whilst the horse was being exercised prior to rehearsals.

“The trainer was not in costume, and filming had yet to commence. Both a veterinarian and a representative of the American Humane Association were present at the time. The independent necropsy has confirmed that the horse died of cardiac failure.”

In a statement released shortly after the news broke, Peta said the show was “exploiting animals” and called for film and television productions to use CGI in place of real creatures.

source: The Guardian