A coalition of U.S. enviro groups sued three federal agencies yesterday for not adequately protecting the endangered Florida panther from sprawl. The panther appears to be making a comeback, but it is still one of the most endangered animals in the U.S., with a population estimated at 50 to 100. In other news of big cats, protections for mountain lions in the Western U.S. are being gradually rolled back, despite voters’ wishes. For example, in March, the Washington state legislature passed a bill overturning a voter initiative that had banned the hunting of mountain lions with dogs.