Tom said:Its a boy. Females have almost no tail. Its just barely a nub behind the cloaca. And the anal scutes form a rounded U shape, never a V. And females will have no concavity at all.
Its very unlikely that they will stop fighting. If they do, the little new one will be in a constant state of stress and fear.
This is a 75 pounder.
Great photo Tom, that is a very clear shot of what a female Sulcata looks like...