|Yes we know they're toxic, but the animals don't eat 'em.
Gerry Harding is a character mentioned in the InGen Database.
InGen Database Entry
Dr. Gerry Harding was the chief veterinarian for Jurassic Park. He was encountered by the assessment team while he was tending to a sick Triceratops. With Dr. Ellie Sattler's assistance, they were able to identify the cause of the illness.