Whenever Friday the 13th rolls around, even the least superstitious of us might look askance at a black cat or shiver at an owl hoot. But animal superstitions, although fun, can cause pretty bad luck for the wildlife who cross their paths. After all, we live in a world where 350,000 tourists can visit Scotland in one year just to try and spot the Loch Ness monster. If that same number of people all decided to hunt wolves or support the illegal trade in tiger parts, that would have a devastating effect on some amazing animals who are neither good …