I am asking this because my chameleon girl has escaped outside and we could not find her. The temperature is 8°C/ 47°F here in Southern England right now (evening) and will drop to about 0°C/32°F at night in a few days. It usually does not get any colder than that here in winter. I wonder whether my girl - an adult Yemen Veilded chameleon, possibly pregnant - has any chance to survive out there if we don't find her. I often leave her vivarium open and she goes for little walks through our home and then returns to her light bulbs to warm up again. Today, she must have walked out to the balkony when I opened the door for just a few minutes, and walked away, and we have spent half the day searching for her in the bushes, but could not find her. If they are in the cold with no basking lamp to warm up - will they fall into winter sleep and get stiff and turn down their metabolism as snakes do? Snakes can stay in such a sate of hibernation (in snakes it is called "brumation") for up to six months and then they come out when it gets warm and are happy and well again. Can something similar be expected from a chameleon? I assume my Lizzie is hiding somewhere underneath of fallen leaves to stay reasonably warm.