Missed this challenge too. Great focus/DOF! Deceptively good shot. Should have placed much higher. Dan nailed it with the "stillness" comment about camouflage. Very cool.
i would have used manual focusing and focused on the subject. that is, if i'm composing it. the effect of the blurred leaves in front, a focused tiger and a tighter crop would have been more effective. hope it helps.
The tiger is definately a "camouflaged" type of animal, like the use of misrepresentation to hide him; ie focus on the grass. Think others may miss that and feel he is not hiding due to being camouflaged. Good luck