"The Congressional climate seems positive for an increase in conservation funding," Senator Lieberman said.
Of EDGE's top 100 mammals, 66 draw little or no conservation funding.
Writing in the journal Science, the authors warn that resolving the conservation funding crisis is urgent.
The 11 percent federal excise tax on the sale of ammunition is a major source of wildlife conservation funding.
Meanwhile, the giant Chinese salamander - the world's largest amphibian - is critically endangered, but struggles to get any conservation funding at all.
As conservation funding is limited, identifying priority areas for conservation of species prone to climatic impacts may improve the benefit of conservation investments.
The Senate passed its version of the $428 billion farm bill Thursday, setting up a bitter fight against the House over food stamps, farm subsidies and conservation funding.
Courchamp said the research shows that even though charismatic large carnivores receive much more conservation funding than other animals, it's still not enough.
Lawmakers are also likely to clash over conservation funding, which both chambers reduced — but which the House cut more steeply, by $5 billion over 10 years.
The programs facing cuts fall under "discretionary" spending, which includes food safety, rural development and conservation funding, research grants and international food aid.
By comparison the kiwi – which has millions of dollars of conservation funding directed towards its survival – is much healthier, with 68,000 animals left.
