Bobcats and other carnivores can remove over 95% of chronic wasting disease - or CWD - prions from infected meat, according to early findings by Wyoming Game and Fish and researchers at the University of Wyoming.

CWD has spread rapidly across the state - putting deer, elk, and moose populations at risk.

Wyoming Game and Fish Wildlife Veterinarian Samantha Allen said bobcats and other carnivores could be a natural ally in the fight to contain CWD prions.

"It just might be another way to stop some of the transmission, and take some of the CWD off the landscape," said Allen. "Which is really important, and we have a really tough time doing that right now."

While some have warned that carnivores and scavengers help spread CWD prions across landscapes, Allen said that's not exactly what her team is seeing.

Researchers found that just 2% of prions remained in bobcat scat after being fed CWD infected materials. The next day, just 1% remains, and on the third day zero prions remain.

These results are similar to a 2021 study of mountain lions, according to a Wyofile report.

Prions are proteins that can't be destroyed like bacteria or a virus. They remain infectious on the land and can even end up in plants that animals eat.

Allen said the science is mixed on whether chronic wasting disease can be transmitted to people, but advises hunters not to eat contaminated meat.

"My recommendation is to get your animals tested, and to not consume CWD positive material" said Allen. "Because we don't want to push this kind of prion disease to change in a way that it does become more likely that we get infected with CWD."

The challenges of stopping the spread of chronic wasting disease, fatal in all cases except in some moose, are multi-faceted.

Wyoming's winter elk feeding grounds are widely seen as potential super-spreaders. But Allen said if the research is confirmed, carnivores could play an important role in clean up.

"It's not going to be one thing that is going to fix or alter the trajectory of CWD prevalence or even management in some of these populations," said Allen. "It's going to be a lot of different things working together."




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Friday is Endangered Species Day and experts are reminding Rhode Islanders of the plight of the North Atlantic right whale.

Right whales' habitat is off the Eastern Seaboard, where they stay close to the coast. They are slow moving and feed near the surface, and those factors, plus their high blubber content, once made them an ideal target for whalers. They were hunted to the brink of extinction before commercial whaling was banned in 1937.

Jane Davenport, senior attorney at the Biodiversity Law Center for the nonprofit conservation group Defenders of Wildlife, said they remain critically endangered.

"Human activities are killing off right whales unintentionally, via fishing gear entanglements and ship strikes, and those have the same effect as killing right whales by harpooning," Davenport pointed out. "They are reducing the population to the point where its survival is in question."

Current estimates place the right whale population around 370, with fewer than 70 females of reproductive age.

Right whales can be hard to spot, as they travel underwater, their backs are black and they have no dorsal fin. In 2008, NOAA Fisheries established seasonal speed zones, but only for vessels over 65 feet in length.

After new research, NOAA proposed amending the rule in 2022, applying it to vessels over 35 feet. The proposal was withdrawn in January but Davenport argued the expanded regulation is practical and necessary.

"If we slow boats down only in limited times and places during the year, it's not year-round, it's not everywhere," Davenport explained. "We need to have slow speed zones, just like we have slow speed zones around schools, twice a day during school days, during the school year."

Right whales feed on tiny crustaceans. Like other whales, their waste is an important part of the ocean ecosystem, as fertilizer promoting the growth of phytoplankton, which is the base of the marine food web. It is estimated phytoplankton are responsible for around half of the oxygen in the earth's atmosphere.

Davenport added despite the challenges, it is still possible to save the whales.

"We can coexist, and if we can coexist, we can allow the right whale to recover," Davenport stressed. "It is not too late. We have not passed the point of no return."


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Today, on the 20th anniversary of Endangered Species Day, conservation advocates warn polices of President Donald Trump's administration are undermining efforts to save animals and plants important to California ecosystems.

Trump's Department of the Interior wants to redefine the word "harm" to remove protection from habitat destruction in deciding which species are at risk.

Susan Holmes, executive director of the Endangered Species Coalition, noted the public comment period for the proposed change ends Monday.

"The number one reason that endangered species become endangered is the destruction of habitat," Holmes pointed out. "The proposals coming from the Trump administration would make it impossible to protect the habitat that wildlife and endangered species depend on."

Trump appointees have also proposed huge budget cuts to agencies overseeing wildlife protection and to environmental research, saying they no longer align with administration priorities.

In California, 178 animals and 290 plants are listed as either endangered or threatened, or are candidates for listing.

Many local events are planned for Endangered Species Day, including programs at Dos Rios State Park and the Cabrillo Marine Aquarium.

Holmes emphasized it is a good time to celebrate the incredible progress the country has made to reestablish species like the gray wolf.

"In California, we've seen species that were on the brink of extinction coming back, including the California condor and the California sea otter," Holmes outlined. "It is really exciting to see people working in communities to recover some of these species."

Also on Monday, the public comment period ends for a proposal to list the monarch butterfly as threatened under the federal Endangered Species Act.

It is Endangered Species Day, a reminder some plants and wildlife need protection, like Pennsylvania's eastern hellbender.

It is the state's official amphibian, a salamander which has survived for millions of years but now faces extinction due to habitat loss and pollution.

Ben Prater, Southeast program director for the nonprofit conservation group Defenders of Wildlife, said today is meant to raise awareness and remind people an incredible variety of species need public support. He pointed out scientists have raised concerns for years about declining eastern hellbender populations.

"The eastern hellbender is quite unique and charismatic," Prater explained. "It's the largest salamander in all of North America, growing to an average of two feet in length, so, it's a giant of our swift, cool, fast-flowing rivers and streams."

Prater stressed the best way to help is by supporting strong protections like the Endangered Species Act. The hellbender is proposed for listing under the act, which would bring federal and state resources to aid recovery, including protecting habitat and studying their breeding and behavior to support conservation efforts.

Prater noted hellbenders are picky. They need cold, clean streams, plenty of food, and flat rocks to nest. Their numbers have dropped, as pollution and dams have disrupted the connected waterways they rely on to breed and survive.

"The real insidious threat to hellbenders is the predominance of sediment that enters our waterways," Prater emphasized. "When you have development, bad forestry practices, bad agricultural practices, all of those things can affect the watershed and the quality of the water that hellbenders rely on."

He added historically, the eastern hellbender's range stretched along the Appalachian Mountains up and down the East Coast. Their preferred habitat includes the diverse mountain streams and rivers found from Alabama and Georgia all the way up to Pennsylvania and New York.