Pentobarbital poisoning in Sumatran tigers (Panthera tigris sumatrae).

Three Sumatran tigers (Panthera tigris sumatrae) at the Heidelberg Zoo in Germany presented with severe neurologic signs. Physical examination and diagnostic tests did not reveal a definitive diagnosis. Two days after initial presenting signs, all of the animals appeared clinically normal.

Pathogenesis of sodium selenite and dimethylselenide acute toxicosis in pigs: cardiovascular changes.

In pigs and other food producing animals, relatively little is known about the mode of action of excess selenium. This study reports the cardiovascular effects brought about in anaesthetised Landrace pigs by 2 mg selenium kg-1 bodyweight intravenously as either sodium selenite or dimethylselenide. Sodium selenite dosing was characterised by a dramatic fall in systemic blood pressure with an increase in cardiac output and heart frequency.