Sorry it got out. I've had salamanders and frogs escape on me before and I haven't "lost" one recently. Best places to check are in bags and similar containers in wardrobes/closets, provided there was a gap under the door for the frog to get in, obviously - think how big the frog is when it hunches down and then halve that for what is a big enough gap. They will tend to go for dark places, so any recess or cover in a dark spot. Good luck.