In 1974, Janssen Pharmaceuticals chemists synthesized a compound so potent a few micrograms immobilized an elephant or rhinoceros. Marketed as Wildnil for wildlife anesthesia, carfentanil was used for ...

LOS ANGELES, CA – The Los Angeles Zoo has announced that its last two Asian elephants, Billy and Tina, will be moved to a larger, more naturalistic sanctuary at the Tulsa Zoo in Oklahoma, marking the ...