The mystery of the Pentagram can be answered later once you find the architect of this plot turning your attention to the scent trails left by this supernatural rodent. You also do your best to retain composure not letting the heady musk of said rodent get the better of you anymore ignoring (distressingly) the constant unyielding arousal plaguing your body.
Out of the two main trails that catch your nose you feel confident that the lingering scent is strongest from your bedroom door. Scurrying on all fours you quickly approach the bottom sniffing under the small gap of the frame. You peer under to see if anyone happens to be waiting or watching though you can't quite tell, and the owner of this animal scent isn't looming as intensely outside to presume otherwise. You look back to the closet thinking it is possible that the peculiar mystery rodent could be hiding among your coats and shoeboxes, but you ultimately decide to chance the outside world (of the rest of your house that is).
You drop down low sticking your under first, a bit of a squeeze squealing frantically as the rough texture of your carpet grinds into your cheeks and shoulders. Still; once your head gets past the gap the rest of you seems to slip easily onward. It was probably a good thing your regain your humanoid figure, uncertain how the thick lower half of a real mouse would fair attempting to squeeze through (though if this rodent is also a feral mouse of sorts they must have managed somehow).
You pick yourself up onto your hindpaws brushing off any clinging dust from the carpet from your fur as you look back to your door, and then down the hallway. It's overwhelming at first, being shrunk to the size of a real mouse makes your house feel nearly 10 times as gigantic and the distances between room to room longer. Though having gotten use to running on all fours even in a less than feral form you shake off the disparaging thoughts and return to your resolve in tracking down the unlikely spellcasting rodent.
A few rooms are open up to you from the hall, their doors either left wide open or just a crack to allow entry. Standing against the back of the hall with your bedroom to your right; the second bedroom is to your immediate left, the bathroom along the center of the left wall. The hallway sharply turns right and will again immediately turn left to let you back into the tiny foyer that connects to the spacious living room on your left, the front door to your house on your right. If you keep going instead you eventually lead into the kitchen, and the sliding door to your backyard awaits at the other end of that.
You sniff the air and catch the rodent's scent, shuddering as the musk plays with your primal arousal once more. You attempt to shake it off and contemplate your next course sensing that the trail is going only one way, the Kitchen. But this is a unique chance to check out the other rooms of the house in your mousey from, an tiny experience like this possible to bring about some unique adventures and discovers not possible for one originally large.
You tap your bristled cheek with your claw tipped finger and ponder.