Animal Affinity

Lately, I've been hearing something scurrying around in my roof (no apartment above me). It's been going on for months but didn't think nothing of it until the pitter patter of feet increased. I'm now thinking that there's got to be a mouse & it must be keeping some company! What's the potential of it/them falling in through one of my air vents? It seems like animals have an affinity for me.

Take last year for example before moving here. I got up to take a shower one morning & just as I stepped into the tub & got the shower going, I noticed a gecko (in the shower stall) tracking my every move. After the customary quick bolt out of the shower, I decided that since it was on the wall, I needed to finish showering so I could make it to work. So I'm showering gingerly, taking great precautions not to startle the gecko & guess what happened? The damn thing fell into the tub w/ yours truly in it. That was it....I was done.....so much for my 20 seconds of bravery. G had to come all the way to my house to terminate it & when he got there, you guessed it, it was nowhere to be found. Fast forward to that evening when I got home. I entered the shower & as soon as I turned on the faucet, what came flying out of the drain? The darn gecko!