Surely you've heard of mice in Disneyland (one named Mickey, in particular), but cats? And lots of them?
Can you spot the cat here? HiddenMickeys.org, 2001.
Yes, it's true: Disneyland is home to many cats, and has been since the 1960s or so. Years ago, when building the now-defunct Sleeping Beauty Castle walk through, over 100 of them were discovered hiding in the castle. Instead of letting them go elsewhere, Disneyland decided to keep the animals and allow them to stay in the park. After all, they controlled the rodent problem (just don't tell Mickey)!
So now, in the year 2008, the rare cat can still be spotted hanging around Big Thunder Mountain Railroad or near the queue of Indiana Jones Adventure. If you really want to catch one, keep your eyes peeled during the night hours - that's when they're most likely to make an appearance.