Marc, I like the space infront of the cheetah to suit the stalking pose. I dont find this too dark, but maybe lacking a touch of saturation and contrast. You do say it was in the evening, so not expecting bright sunshine here.
I agree that it's a tad underexposed Marc, as well as greenish overall. I wish there was just a bit more head-turn. Impressive techs from the D3s yet again!