The "long tail" you guys think you see is in fact the outside of the rear right leg in mid stride, that is broken up by that dry weed in front. You can also make out the inside of the rear left going to the ground behind it. Also, high above its anus is a little snub tail, indicative of a bob cat or lynx. The lynx have trapped are more bushy, but that is due to that fact that the pelts are "prime", and this one is not quite there yet, but without any doubt in my mind, this is a lynx, or bobcat.
This is a lynx I trapped a couple years back:
and this is where the "tail" should be if it were a cougar, which it is not in any way shape or form