I let our 2 year old pussy out yesterday morning, he ate his breakfast and then did his usual, lay on top of the boiler house. He lay there until about lunch time when he wondered off and hasn't come back. He has disapeared before but never missed more than 2 meals, he missed his dinner last night, breakfast this morning and dinner time for him is between 4-5 so he's missed todays as well. I'm worried as last night temps dropped to -6 around here, could a cat survive in them temps? His bowl outside still had food in it last night, I got up this morning and it was gone but there is no saying it was him that ate it, his mates would call around regularly and check his bowl. We leave the window in the small toilet open for him to come in but never appeared. Should I be worried?