Additional file 1.


Horse number 1, 56 h after initial coffee husk intake (T56), showing anxious expression, excitability, restlessness, involuntary tremors and constant movement of the lips, flaring nostrils, involuntary muscle tremors, and sweating. Horse number 5 at T56, showing excitability and restlessness at the end of this video.

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Delfiol et al. BMC Veterinary Research 2012 8:4   doi:10.1186/1746-6148-8-4