NAVLE® Question of the day

A two-year-old Angus cow is presented with weakness of the hind limbs and a staggering gait.

On physical exam, the heart rate and respiratory rate are slow and irregular, and the pupils are dilated.

The cow's breath and urine smell like the odor of mouse urine.

Suddenly the cow's pulse becomes rapid and thready, she collapses, and dies of apparent respiratory failure.

Which one of the following plants is most likely to have caused this spectrum of clinical signs?

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