Great elk shots. I like the up close and personal feel of the first two. The second one is great light and an awesome pose. The last one could benefit from some work on the color, warming it up a little. Cool photos though I wish I was there to be that close!
Like I mentioned in the Critique posting, there sees like there could be more contrast though. Didn’t you say you work on a Mac? I wonder if this is a different gamma thing going on her or if what I’m noticing is just a difference in preference between my eye and yours.