Diana stared in disbelief when the 500-lb. animal jumped its fence and walked right up to her 2-year-old.

There are unsolved crimes, then there are the kind of creepy, "What the hell could possibly be going on here" capers that keep the cops, & anyone who hears about them, up at night. Here are real cases that almost fall into X-Files territory.

Anybody want to visit one of these mysterious places at least once in their life?

7 Crazy, unbelievable things that probably shouldn't exist.

The animal kingdom consists of a vast number of beautiful and intricate creatures who have learned over the eons to adapt to the world surrounding them--and that's totally cool, because if they come in our yard we can just kill them.

The Turritopsis Nutricula is able to revert back to a juvenile form once it mates after becoming sexually mature. Marine biologists say the jellyfish numbers are rocketing because they need not die.