When I saw "Serengeti" I immediately thought "well it's a lion of course". Then I saw the location was Texas Panhandle and said, "well, still could be an African lion".
Thinking about the dog possibility… I'm not saying it's impossible that it's a dog, but this is pretty far from any houses and we haven't seen a dog out there in the 10+ years we have hunted that spot
Mountain lion would have a black tipped tail. This isn't a mountain lion. You Don't need to see the animal. Look at the end of the tail…. No black tip, no mountain lion.
Yellow Lab
"I've lived through some terrible things in my life, some of which have actually happened."