Put down for "anything" in the Bible which includes red heifers!
Huh?? You do know that a red heifer is simply a cow with an unspotted reddish coat. They do exist, but they are rare.
If you meant that if you believed a red hiefer means the end of the world, you'll believe in anything. Well I'm not sure who exactly is saying that. All these thread on FR seem to be written by people intent on mocking that religious view. Maybe I missed it, but I have not seen a credible religious source which said that this calf's birth meant that the rapture or temple rebuilding was imminent.