Two types of deadly pneumonia are sweeping through Southern Nevada's herds of bighorn sheep. The illnesses are already having an impact on the sheep population, and could cause problems for years to come. A wildlife biologist described the bacterial illnesses as "a worst-case scenario" for the sheep, who have no natural immunity to the disease. So can anything be done to contain the pneumonia outbreak? And what will happen to Southern Nevada's iconic bighorn sheep if the disease continues to spread?
Peregrine Wolff, state wildlife veterinarian, Nevada Department of Wildlife