The babies and shy ones (like Rosalind) do ball up when I first disturb them - and stretch out once they realize I'm not a threat. But the older ones I've had for a while? Hardly ever. Seriously, I can't remember Toby balling up since the first day I brought him home... and I only WISH Mona would go into a ball, so I could get a weight without putting her in a snake bag.IMO there's no reason to be worried, in fact I think it's a good sign your snake is relaxed.