A wolf in Yellowstone feeds on an elk carcass near Soda Butte and chases away magpies and ravens trying to get a bite to eat. Wolves, magpies and ravens are not afflicted by CWD. Though they may be able to shed prions in their urine and feces, they cannot pass it on to other animals. Moreover, with thousands upon thousands of cervids on the landscape, the deposition of prions by them into the environment is exponentially greater. Photo courtesy Jim Peaco/NPS
A wolf in Yellowstone feeds on an elk carcass near Soda Butte and chases away magpies and ravens trying to get a bite to eat. Wolves, magpies and ravens are not afflicted by CWD. Though they may be able to shed prions in their urine and feces, they cannot pass it on to other animals. Moreover, with thousands upon thousands of cervids on the landscape, the deposition of prions by them into the environment is exponentially greater. Photo courtesy Jim Peaco/NPS