A rather dark-colored cougar was recently killed in the mountains of far West Texas near El Paso. READ MORE HERE at Texas Cryptid Hunter. I used to live in West Texas and can tell you it is rugged, sparsely-populated, and inhospitable. Under the best of circumstances, cougars are hard to spot. They are reclusive and generally avoid people. Given how rare it is to see one with normal coloring, and factoring in how dark this one is by comparison, it isn't hard to imagine that even darker (perhaps black?) animals are hidden away in some rocky alcove high up some mountain cliff in the middle of the desert. The odd become then quite remote of properly documenting their existence.