Growing marijuana is illegal, so the growers tend not to be particularly solicitous of EPA regulations, and as a result the Fisher may be placed on the endangered species list:

A rare west coast mammal is up for Endangered Species protection thanks to the threat posed by California’s illegal marijuana industry.

The fisher, a carnivorous cousin of the weasel found in the old-growth forests in California, Oregon and Washington is already rare, its numbers reduced by fur trappers and loggers going back to the 1800s, as well as by urban development. Only two naturally occurring wild populations exist, according to the Center for Biological Diversity: one is in the southern Sierra, and the other is in southern Oregon and Northern California. A third was reintroduced into Washington’s Olympic National Park in 2008. But the motivation for the new level of protection, according to U.S. Fish and Wildlife Service officials, comes from the use of rat poison on marijuana plantations. Of 58 carcasses tested by one 2012 study, nearly 80 percent tested positive for traces of rodenticide.

“It is an illegal activity so it’s not like we know a lot yet,” explained Paul Henson, state supervisor for the FWS in Oregon. “But we know it’s fairly widespread within the range of the fisher, because that’s also where a certain amount of the illegal cultivation occurring on public lands.”

Make pot legal now.