He's super adorable, but make sure you're handling him as little as possible. Even if he doesn't appear to be stressed when you're handling him, he probably is. When you have to handle him, try to wear powderless gloves or spray your clean hands with dechlorinated water. Climbing around your hand and arm will dry him out and transfer oils from your skin to his, which aren't good for him. Not to mention, if he leaps off your hand he could get injured.