Yeah, these geckos, especially the larger Uros, dont really bruise from a lunge or fall. It is usually a result of constant rubbing. Usually all large WC Uroplatus arrive with these rub marks from the little containers they are shipped in. Also, the size of the cage does not really matter as far as rubbing...What I mean is that if the cage is really large, their is still a chance that the conditions are not right and the animal will 'rub' its nose at nightime when it is active...