It’s not just a bad hare day. A rapidly spreading virus is causing cottontail rabbits to grow black, tentacle-like growths out of their heads, prompting warnings to steer clear of the mutated animals. The so-called Frankenbunnies have been spotted multiple times in Fort Collins, Colo. Resident Susan Mansfield told 9News she saw a rabbit with what looked like “black quills or black toothpicks sticking out all around his or her mouth.”