My sulcata is currently 3.5lbs. She lives in an enclosure with a secured lid to keep hawks and predators out. Does anyone know a general weight that hawks are no longer a threat? I was told by a friend who keeps tortoises that once his reach ten pounds he no longer worries about birds of prey. Even when I do make a lidless enclosure, it will still be secured and escape proof, with a completely enclosed night box, but I'm wondering how soon I should start building.