This doe and fawn have been on my property. Coat appears darker. Is it a melanistic deer. I have a video of them running at a different time. Their gait isn’t a typical gallop but a hop like a mule deer. Do white tails hop like that. I’ll try to post the video but don’t know if I can. The third doe in some of the pictures helps to show some of the color difference. Don’t tell me it’s a black panther
If you are East or South of Longview it is very possible. I live between Longview and Hallsville and we have several black Whitetail does that cruise the neighborhood. I hunt on the North side of the Sabine River and have seen a couple of black Whitetail Bucks over the years. None were wide enough to kill.