A 5-year-old domestic huacaya alpaca mare, with a body mass of 40 kg, was admitted to the Clinic for Ruminants, Vetsuisse-Faculty of Berne, Switzerland, with a history of acute onset of paresis in the pelvic limbs for one day without observed trauma. Previous treatments from the referring veterinarian included anthelmintics (ivermectin a 0.2 mg/kg of body weight) and antibiotics (ceftiofur b 1.0 mg/kg of body weight), resulting in no improvement in her clinical condition.At examination, the alpaca was recumbent, but rectal temperature (37.8uC [100.04uF]; reference interval, 37.5-38.9uC [99.5-102.02uF]), heart rate (64 beats per minute [bpm]; reference interval, 60-90 bpm), and respiratory rate (24 breaths per minute; reference interval, 10-30 breaths per minute) were within the reference range. 1The alpaca was in thin body condition. Examination of the cardiovascular, respiratory, digestive, and urinary systems did not reveal abnormalities.A detailed neurologic examination was performed.2

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