Photo of the Day: #BlackCatAppreciationDay is today, August 17. We're appreciating the big black cats of the wild, known as panthers. The word "panther" refers to a leopard, jaguar, or a subspecies of cougar with a melanism mutation. . . . #POTD #photooftheday #picoftheday #blackcat #bigcat #junglecat #nature #naturephotography #wildlife #wildlifephotography #wild