How long have you had him? It's normal for them to be skittish when you first get them. They have to get used to their new surroundings. Never grab them. Once he gets more comfortable, you can try holding your hand out to him and see if he climbs on you. My biggest fear was mine biting me. He will walk right onto my hand if he wants, but there are days where he just turns around and walks away. They are solitary animals and usually if there isn't something in it for them, they don't want to be bothered.