Last night, a guest of ours told us about a little problem she had at her house. She went into her bathroom one morning and found a rat in the toilet! She scooped him out and set him free. Well, it happened again. This time she called the county, who sent someone over to get it and kill it. Apparently, rats come up through the sewer into toilets frequently enough to keep this guy employed full time. Scary.
His advice, keep flushing until the rat goes away. Scare me.
If that's not enough to spook you, here's video.