In February, people started calling Lisa Bloch, communications director for the Marin County Humane Society, with some weird observations: Coyotes were attacking cars in the suburb north of San Francisco. 

At first, Bloch thought the animals might be suffering from rabies, but as the calls continued to trickle in, she knew it couldn’t be the feared neurological disease. If it were, the coyotes would have long since died. (Related: "Do Animals Get Drunk?") 

Then, someone suggested that perhaps the coyotes had eaten some hallucinogenic wild mushrooms. Given that Marin County is known for what Bloch calls “a liberal attitude towards psychedelic substances,” the hypothesis seemed plausible.

Though the theory quickly caught the public’s attention, it's almost certainly untrue. 

“It’s likely someone had fed the animals from a car, and when other motorists didn’t