Horses have been known to also eat meat.

http://thehorseaholic.com/the-forgotten-story-of-meat-eating-horses/

1) The BBC filmed horses eating fish on a beach of an English Island.

2) In Iceland pastured horses are provided, salted fish as a protein and mineral/salt supplement.

3) Horses have been known to consume raw meat and blood willingly in Arabia, New Zealand, and United States.

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