Alright, I'm super freaked out. I got one of those long thin brushes meant to pull excess lint out of your dryer, because the guy who lived here before us (and used the dryer before us) seemingly never cleaned it out, so I didn't want to cause a fire. I brushed a bunch of lint out, and felt the turbine mechanism moving freely, so I thought things were great. Then I turned on the dryer and heard a bunch of crumbs getting sucked through, but then it was like 20 times louder and vibrated 20 times more than usual. So I thought maybe I'd forced a ball of lint down too far. I got a flashlight and saw a ball stuck in the turbine. Using the brush, I pulled it out to examine it. Then I noticed an ear, a paw, and a very long tail. Either my mind is playing tricks on me and I have a great imagination, or there's a mouse in my dryer. :\