How do I know? My bearded dragon woke up. He's been asleep for the past 2 months and he woke up yesterday. He does it every year, just goes under his log and doesn't come out again. I touch him to make sure he's still alive and that's it, he sleeps and we have what looks like an empty tank sat in our lounge. Yesterday, he came out looking refreshed and hungry, so spring must be round the corner. Or he just got hungry.