Hope they have a big litter box! We've all had to deal with unwanted critters that find their way into our homes. But most of them can't compare to this elderly California couple who found a mountain lion hiding in their bathroom. Edward and Kathy Sudduth, who are both in their 80's, went to investigate after hearing a loud noise. It turned out to be a mountain lion, who ran to the bathroom where the couple were able to lock it inside. Wildlife officials were called in to remove the animal, which they suspect was chasing a neighbor's pet. The Sudduths, meanwhile, say they learned an important lesson about not leaving the door open. Mountain lions are generally not considered dangerous to humans unless they are "exhibiting aggressive behavior". How would you have reacted to a mountain lion in your home? What's the biggest animal that ever got inside?