Oh no, poor you, have you checked under the cat or dog maybe?
I once had one of those really tiny phones, was busy chatting on it.....then later I couldnt find the blessed phone, where is it gone, I kept ringing myself, but couldnt hear it DOH it was set on silent, just vibrate...so ran around the place looking and listening for some vibration....then I saw our fat cat, looking all googly, each time the phone rang/vibrated his eyes went wide like saucers, his ears moving back and forth, stopped when the phone stopped, oh no, surely he hasnt eaten the phone, no surely not, cant be, panic!!! I called my husband, quick, come, Wumpy the idiot has swallowed my phone, he rushed home, I dial my mobile, Wumpy's eyes pop out almost, husband panics, we need to get him to the vet, fast, he grabbed the cat basket placed Wumpy inside, stormed out to the car, I get back into the flat, crying, worried about our cuddly Wumpy, then I saw it....my mobile phone, the darn cat has been sitting on it all the time, of course....I was chatting while I folded the laundry out of the tuble dryer, then put the phone on top and carried it all through from the laundry room and forgot, the cat naturally sat himself on top as it was nice and warm there....
Hope you find your keys soon and stay nice and warm and dry too
Love
Karen x