This is what was told me by my 9-year-old daughter who is an avid Webkinz player. Rumor #1: If you complete the Legendary Crown of Wonder and you put it on your Webkinz pet. The pet will die. Rumor #2: Ms. Birdie (who runs the Adoption Center) will steal your Webkin or she will stab your webkin. Rumor #3: Dr. Quack (the Vet) has a gun and shoots your pet behind the curtain when you take it for a check-up.
Webkinz is an online game site which is designed to be gentle and all the games (even the shoot-them ones) are revised so no one is ever killed and the violence level is probably 5 on a scale of 0 to 100.
And yet, young children obviously create and relish their own darker and more frightening stories. I found this deeply interesting and illuminating.